(12) Patent Application Publication (10) Pub. No.: US 2009/ A1

Transcription

1 (19) United State US A1 (12) Patent Application Publication (10) Pub. No.: US 2009/ A1 Zhu et al. (43) Pub. Date: Jan. 22, 2009 (54) SYSTEMS AND METHODS FOR A RFID ENABLED METAL LCENSE PLATE (75) Inventor: Jeffrey Zhu, Carlbad, CA (US); Chih-chuan Yen, San Diego, CA (US); Jun Liu, San Diego, CA (US); Joe Mulli, Oceanide, CA (US) Correpondence Addre: BAKER & MCKENZE LLP PATENT DEPARTMENT 2001 ROSS AVENUE, SUITE 2300 DALLAS, T (US) (73) Aignee: NEOLOGY, INC., Poway, CA (US) (21) Appl. No.: 11/962,047 (22) Filed: Dec. 20, 2007 Related U.S. Application Data (60) Proviional application No. 60/71,273, filed on Dec. 21, Publication Claification (51) Int. Cl. G0B I3/4 ( ) (52) U.S. Cl /572. (57) ABSTRACT In the embodiment decribed herein, a RFID enabled licene plate i contructed by uing the licene plate, or a retro reflective layer formed thereon a part of the reonator con figured to tranmit ignal generated by and RFID chip inte grated with the licene plate. Such an RFID enabled licene plate can include a metal licene plate with a lot formed in the metal licene plate, and a RFID tag module poitioned in the lot. The RFID tag module can include a chip and a loop, and the loop can be coupled with the metal licene plate, e.g., via inductive or conductive coupling. In thi manner, the metal licene plate can be configured to act a a reonator providing increaed performance. 11 O SSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS SSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS:

2 Patent Application Publication Jan. 22, 2009 Sheet 1 of 6 US 2009/ A1 11 O FIG. 1 1OO 2O2 & FIG. 2 3O2 1OO FIG. 3 3O4

3 4OO 4O2 FIG. 4A FIG. 4B

4 Patent Application Publication Jan. 22, 2009 Sheet 3 of 6 US 2009/ A1 400 : & y ^ S S& S : % FIG. 5B

5 Patent Application Publication Jan. 22, 2009 Sheet 4 of 6 US 2009/ A1 400 FIG.6ALI / (FRONT VIEW) / 400 6O2 / FIG.6C 4 -a- (SIDE VIEW) 6OO / Y. FIG. 6B (SIDE VIEW)

6 Patent Application Publication Jan. 22, 2009 Sheet 5 of 6 US 2009/ A1 702 : : FIG. 7A / 7OO / S. S S. FIG. 7B FIG. 7C

7 Patent Application Publication Jan. 22, 2009 Sheet 6 of 6 US 2009/ A1 06 / 90O

8 US 2009/ A1 Jan. 22, 2009 SYSTEMIS AND METHODS FOR A RFID ENABLED METAL LCENSE PLATE RELATED APPLICATIONS INFORMATION Thi application claim the benefit under 35 U.S.C. 119 (e) to U.S. Proviional Patent Application Ser. No. 60/71,273, filed Dec. 21, 2006, and entitled Method and Apparatu for RFIDEnabled Metal Licene Plate', which i incorporated herein by reference in it entirety a if et forth in full. BACKGROUND Field of the Invention The embodiment decribed herein relate generally to electronic vehicle regitration and tracking ytem, and more particularly to the ue of Radio Frequency Identification (RFID) in uch ytem Background of the Invention 0005 RFID technology ha long been ued for electronic vehicle tolling application. In Such application, an RFID reader or interrogator i poition over or near a roadway at a point where a toll i to be collected. An RFID tag i then place in each vehicle that include an identifier by which the vehicle can be recognized, e.g., the vehicle' licene plate number. The interrogator then ue RF ignal to interrogate the tag and obtain the identifier o that the toll can be applied to the correct vehicle, or account Generally, the tag to interrogator communication i achieved through a form of modulation known a backcatter modulation. In a backcatter modulation ytem, the tag doe not generate it own RF carrier ignal when tranmitting information to the interrogator. Rather, the interrogator gen erate an RF carrier and modulate the carrier with data intended for the tag, e.g., a requet for the tag identifier information. The tag receive the modulated ignal decide the data and then perform action in accordance therewith e.g., accee the memory and obtain the requeted identifier information. The interrogator continue to tranmit the RF carrier, now with no data on it. The tag receive thi un modulated carrier and reflect it back to the interrogator. Thi i called backcatter. In order to end data back to the inter rogator, e.g., identifier, the tag modulate the reflected, or backcatter ignal with the data For eample, the tag will alternately backcatter and not backcatter the RF carrier ignal for a certain period of time in order to tranmit a digital 0 an 1 repectively. Thu, the tag modulate the backcatter ignal by reflecting or not reflecting the ignal baed on the data, i.e., "1' and 0. to be ent. The interrogator receive the modulated backcat ter ignal and decode the information received thereon. 000 Early on, uch tag were active device, meaning they poeed their own power ource, uch a a battery. Anactive tag wa neceary, for eample, in order to generate enough power in the reflected ignal to tranmit information over etended ditance. But more recently, paive tag technol ogy ha become more viable. A paive tag doe not include a battery or power ource of it own. Rather, energy in the RF ignal received from the interrogator i ued to power up the tag. For eample, the received RF ignal can be rectified and ued to charge up a capacitor that i then ued to power the tag A antenna and integrated circuit technology ha evolved, larger and larger ditance can be achieved with paive tag of maller and Smaller dimenion. Accordingly, Small, thin, light weight tag can be ued in a wide variety of application. Often thee tag are referred to a ticker tag or RFID label, becaue of their dimenion and the fact that they can be manufactured to include an adheive layer o that they can be applied to the outide of container, the urface of document, inventory, etc. In other word the tag can be applied like a label or ticker The emergence of paive, ticker tag technology ha alo greatly reduced the cot of implementing an RFID ytem. A a reult, new application, uch a Electronic Vehicle Regitration (EVR) uing RFID, have emerged. Cur rently, e.g., in the United State, a vehicle owner regiter their vehicle with the State government and pay a fee. The owner i then provider a ticker, which i applied to the vehicle licene plate, to evidence the valid regitration of the vehicle; however, thee ticker can eaily be counterfeited or tolen, i.e., removed and applied to another vehicle. Such activity i difficult to detect, becaue the only way to deter mine that a regitration ticker doe not belong on a certain vehicle i to acce a databae and check the correponding information For eample, in the United State, an etimated five to ten percent of motorit fail to legally regiter their vehicle, reulting in lot annual tate revenue of between S720 million and S1.44 billion. Outide of the United State, ome government agencie report the problem at 30-40% of the vehicle Deploying an Electronic Vehicle Regitration y tem can help Motor Vehicle Adminitrator achieve increae in vehicle compliance and aociated revenue by eliminating the need to rely on inefficient, manual, viual-baed compli ance monitoring technique. EVR ue RFID technology to electronically identify vehicle and validate identity, tatu, and authenticity of vehicle data through the ue of interroga tor and tag that include data written into the tag memory that matche the vehicle regitration data. Fied, e.g., roadide, or handheld interrogator can then be ued to read the data out when required. Thu, RFID technology can enable automated monitoring of vehicle compliance with all roadway uage regulation, e.g., vehicle regitration, tolling, etc., through a ingle tag There are two common way of attaching a RFID tag to a vehicle, one i uing an RFID label tag attached to the windhield of the vehicle. The tag can then be read by a roadide or handheld reader. A econd method of attaching the tag to a vehicle i to embed the RFID tag into the licene plate. Thi ha the convenience an continuity of replicating the application of current regitration Sticker; however, Such a olution can alo uffer from reduced tranmiion, i.e., communication ditance due to the effect the metal licene plate ha on the performance of the tag antenna. (0014 For eample, a illutrate in FIG. 1, a RFID tag 100 coniting of a RFID chip 102 and an antenna 104 can be mounted on the vehicle licene plate 110. A mentioned, however, licene plate 110 i uually made from metal. A a reult, the tag information may not be readable due to the hielding effect of metal urrounding tag 100. Moreover, if tag 100 i directly applied to the metal urface of licene plate 110, then tag antenna 104 can be horted or everely detuned by the metal urface. A a reult, tag 100 will not be read, or will only be readable at very hort ditance A conventional approach to overcoming thi iue i to leave ome pacing 202 between tag 100 and metal licene plate 110 a hown in FIG. 2. Such a olution ha an added

9 US 2009/ A1 Jan. 22, 2009 benefit in that metal licene plate 110 can alo erve a a back plane for tag antenna 104. For eample, a illutrated in FIG. 3, an RFID tag 100 can be houed within an non-metal enclo ure 302, e.g., formed from a low dielectric material that include a pacer 304 Such a an air gap or foam material One problem with uch a conventional olution i the increaed dimenion, i.e., thickne of the reulting licene plate aembly. Accordingly, conventional approache force a tradeoffbetween reduced performance, or increaed ize and dimenion, which can have a negative impact. SUMMARY In the embodiment decribed herein, a RFID enabled licene plate i contructed by uing the licene plate, or a retro-reflective layer formed thereon a part of the reo nator configured to tranmit ignal generated by and RFID chip integrated with the licene plate. 001 For eample, in one apect, uch an RFID enabled licene plate can include a metal licene plate with a lot formed in the metal licene plate, and a RFID tag module poitioned in the lot. The RFID tag module can include a chip and a loop, and the loop can be coupled with the metal licene plate, e.g., via inductive or conductive coupling. In thi manner, the metal licene plate can be configured to act a a reonator providing increaed performance In another apect, the RFID tag module can be poi tioned ubtantially within the lot uch that the addition of the RFID tag module doe not increae the thickne of the licene plate In till another apect, the RFID enabled licene plate can comprie a RFID tag module, poitioned in the lot, which include a chip and contact. The contact connected with the metal licene plate, e.g., via a conductive pate or a older connection In till another apect, the RFID enabled licene plate can comprie a licene plate and a retro-reflective layer formed over the licene plate. A lot can then beformed in the retro-reflective layer, and a RFID tag module can be poi tioned in the lot. The RFID tag module can include a chip and a loop, and the loop coupled with the retro-reflective layer, e.g., via inductive or conductive coupling In till another apect, the RFID enabled licene plate can include a retro-reflective layer formed over the licene plate and a lot formed in the metal licene plate. A RFID tag module can be poitioned in the lot. The RFID tag module can comprie a chip and contact, and the contact connected with the metal licene plate, e.g., via a conductive pate or a older connection Thee and other feature, apect, and embodiment of the invention are decribed below in the ection entitled Detailed Decription. BRIEF DESCRIPTION OF THE DRAWINGS 0024 Feature, apect, and embodiment of the inven tion are decribed in conjunction with the attached drawing, in which: 0025 FIG. 1 i a diagram illutrating an eemplary licene plate compriing an RFID module: 0026 FIG. 2 i a diagram illutrating a ide view of the licene plate of FIG. 1; 0027 FIG. 3 i a diagram illutrating a RFID module that can be ued in conjunction with the licene plate of FIGS. 1 and 2: 002 FIGS. 4A and 4B are diagram illutrating an eample RFID enabled licene plate in accordance with one embodiment; 0029 FIGS.5A and 5B are diagram illutrating method for coupling an RFID module with the licene plate of FIGS. 4A and 4B; 0030 FIGS. 6A-C are diagram illutrating an eample RFID enabled licene plate in accordance with another embodiment; 0031 FIGS. 7A-C are diagram illutrating eample RFID enabled licene plate in accordance with another embodiment; 0032 FIG. i a diagram illutrating another eample RFID enabled licene plate in accordance with another embodiment; and 0033 FIG. 9 i a diagram illutrating another eample RFID enabled licene plate in accordance with another embodiment. DETAILED DESCRIPTION The embodiment decribed below are directed to ytem and method for a RFID enabled licene plate in which a metal layer of the licene plate i actually ued to radiate backcattered energy generated by a RFID tag poi tioned within a lot created in the licene plate. Accordingly, not only doe the metal licene plate not interfere with the operation of the tag, it actually ait Certain embodiment decribed herein are directed to method for creating an antenna tructure directly on (1) a metal licene plate, (2) a metalized retro-reflective foil cov ering a non-metal licene plate, or (3) a metalized retro reflective foil covering the metal licene plate. Depending on the embodiment, the RFID chip can be directly connected to or electrically coupled, either capacitive or inductively, with the antenna tructure. The antenna tructure can be a ingle or multi-frequency reonant tructure FIG. 4, compriing FIGS. 4A and 4B, i a diagram illutrating an eample licene plate 400 compriing an RFID tag in accordance with one embodiment. A hown in FIG. 4A, licene plate 400 can comprie an open area, or lot 402. For eample, lot 402 can be cut into metal licene plate 400. Alternatively, lot 402 can be punched out of plate 400. A hown in FIG. 4B, a RFID tag module 406 compriing an encloure around tag 404 can then be poitioned within lot 402. The dimenion of lot 402 and module 406 can be deigned uch that module 406 fit within lot 402 creating a ubtantially planar urface with the urface of metal licene plate 400. It hould be noted that the top of module 406 i hown etending beyond the urface of licene plate 400 in FIG. 4B, creating a non-planar Surface; however, thi i purely for illutration. In practice, module 406 can be made etremely thin allowing for a ubtantially planar Surface acro all of plate 400, including lot 402, even when module 406 i intalled therein For eample, module 406 can be imilar to the mod ule illutrated in FIG. 3. Thu, module 406 can include an encloure if required. Module 406 can then be configured to include a feeding loop that can couple tag 404 with metal licene plate 400. In thi manner, the entire licene plate 400 can then erve a an effective radiator via inductive coupling through the feeding loop.

10 US 2009/ A1 Jan. 22, FIGS.5A and 5B illutrate two eample implemen tation of the embodiment illutrated in FIG. 4. In FIG. 5A, module 406 comprie a chip 502 coupled with a feeding loop 504. Slot 402 i then poitioned uch that feeding loop 504 will be inductively coupled with metal licene plate 400. In FIG. 5B, lot 403 i poitioned uch that feeding loop 504 i capacitively coupled with metal licene plate Further, in certain embodiment, the radiation gain can be enhanced by uing the metallic car frame (not hown). For eample, with a properly deigned tag antenna and proper conideration of the pacing between the metallic car frame and licene plate 400, the metal car frame can be ued a a good antenna reflector In another embodiment, a tructure very imilar to Planar Inverted-F Antenna (PIFA) can be implemented by crewing the licene plate directly to the metallic car frame a illutrated in FIG. 6. In FIG. 6, which comprie FIGS. 6A-C, metallic crew erve a horting pot 602 and metallic car frame 600 erve a a ground plane for the antenna of tag module FIG. 7, compriing FIGS. 7A, 7B, and 7C, i a diagram illutrating an eample of a licene plate 700 con figured to incorporate an RFID tag in accordance with another embodiment. A hown in FIG. 7A, an area, or lot 702 i cut, or punched, etc., in licene plate 700. A hown in FIG. 7B, a non-metal material 704 can then be inerted into lot 702 uch that both the front and rear urface of licene plate 700 are flat. Material 704 can be tuffed, etruded, etc., into lot 702. A hown in FIG. 7C, an RFID trap' com priing a chip 70 with contact 710 can then be poitioned over lot 702 a illutrated. Contact 710 can then be con nected to or capacitively coupled with metal licene plate 700. Depending on the embodiment, trap 712 can be placed on either the front urface or the rear urface of the licene plate. The entire licene plate 700 then become a lot antenna coupled with the RFID chip, which i le enitive to the metallic car frame in term of tag antenna detuning effect. Contact 710 can be oldered to plate 700, adhered uing a conductive pate, or both It hould alo be noted that trap 712 can be made etremely thin, uch that the urface of licene plate 700 i Subtantially planar In certain embodiment, the dimenion of lot 702 can be altered, or multiple lot included to create a dual or multiple reonance frequency lot antenna. In Such configu ration, the tag will repond to multiple frequency band, Such a the Ultra High frequency (UHF) band, e.g.,900 MHz, and the microwave band, e.g GHz. Thi can allow multiple application capability. For eample, depending on the appli cation, one frequency band can be preferred for it localiza tion characteritic and another frequency band can be pre ferred for it long range read capabilitie. More pecifically, a higher frequency band, Such a a 2.45 GHZ band, can be ued for write application a it limited range help inure only the tag of interet i written to, while a lower frequency band, uch a a 900 MHz band, can be ued for multi-tag read application a it greater range allow many tag to be read over a large area. In other embodiment, multiple frequency band can be needed due to regulatory requirement that can vary the authorized frequency band baed on location, e.g., country, city, etc., and by application FIGS. and 9 are diagram illutrating eample multi-frequency RFID licene plate in accordance with two eample embodiment. In FIG., two lot 02 and 04 are formed in metal licene plate 00. A trap 06 i then poi tioned acro lot 06 a illutrated. The two lot 02 and 04 are configured, with repect to dimenion, pacing, location, etc., uch that the lot antenna formed from licene plate 00, lot 02 and 04 and trap 06 will reonate at the deired frequencie, e.g., the UHF and microwave band In FIG. 9, two lot 902 and 904 are formed in licene plate 900; however, in thi eample, lot 902 and 904 are connected via lot 906. A lot 910 then etend to the edge of plate 900. Strap 90 i then poitioned acro lot 910 a illutrated. Again, lot 902,904,906, and 910 are configured Such that the reulting lot antenna reonate at the deired frequencie The lot of FIGS. and 9 can be filled with non metallic material a in the eample of FIG.7 depending on the embodiment. Further, certain paraitic element can be included, or changed to achieve the proper multi-frequency operation. It hould alo be noted that the embodiment of FIGS. 4 and 5 can alo be configured a multi-frequency reonant tructure via the incluion of further lot appropri ately contructed o a to allow the tructure to reonate at the deired frequencie It will be undertood that other lot dimenion, location, pacing, interconnectedne, etc., are poible and will depend on the requirement of a particular implementa tion. Similarly, the poition of the trap compriing the chip and connector can vary a required by a particular imple mentation. Accordingly, the pecific implementation illu trated herein hould not be een a limiting the embodiment dicloed to any particular configuration It will alo be undertood that the impedance of the reulting antenna tructure in the above embodiment will need to be matched to that of the chip. Thi can impact the lot dimenion, etc. It can alo require additional circuit ele ment, i.e., the incluion of a matching circuit A retro-reflective film can be ued to cover the front urface of the licene plate. Such a film can make the licene plate modification inviible from front view; and can alo make the licene plate viewable in dark lighting. If the retro reflective film contain metal material, e.g., a metallized polymer film, then a elective metal removal proce can be applied uch that the film area covering the open area in the licene plate i de-metallized. Such a de-metallization i decribed in detail in co-owned U.S. Pat. No. 7,034,6, a well a Co-owned patent application Ser. No. 10/45,63, each of which are incorporated herein by reference a if et forth in full. In other embodiment, the antenna tructure can actually be formed on a retro-reflective layer that i then applied to a non-metallic, or metallic, licene plate While certain embodiment of the invention have been decribed above, it will be undertood that the embodi ment decribed are by way of eample only. Accordingly, the invention hould not be limited baed on the decribed embodiment. Rather, the cope of the invention decribed herein hould only be limited in light of the claim that follow when taken in conjunction with the above decription and accompanying drawing. What i claimed i: 1. A RFID enabled licene plate, compriing: a metal licene plate; a lot formed in the metal licene plate; and a RFID tag module poitioned in the lot, the RFID tag module compriing a chip and a loop, the loop coupled with the metal licene plate.

11 US 2009/ A1 Jan. 22, The RFID enabled licene plate of claim 1, wherein the loop i coupled with the metal licene plate via inductive coupling. 3. The RFID enabled licene plate of claim 1, wherein the loop i coupled with the metal licene plate via capacitive coupling. 4. The RFID enabled licene plate of claim 1, where the RFID tag module comprie an encloure. 5. The RFID enabled licene plate of claim 4, wherein the encloure i made from a non-metallic material. 6. The RFID enabled licene plate of claim 4, wherein the encloure include an air gap. 7. The RFID enabled licene plate of claim 4, wherein the RFID tag module further comprie a pacer within the enclo SUC.. The RFID enabled licene plate of claim 7, wherein the pacer i made from a dielectric material. 9. The RFID enabled licene plate of claim 1, further com priing a plurality of lot formed in the metal licene plate, wherein each lot i configured to reonate at a different frequency, and wherein the RFID tag module i poitioned within one of the plurality of lot. 10. The RFID enabled licene plate of claim 1, further compriing a retro-reflective layer over the metal licene plate. 11. The RFID enabled licene plate of claim 10, wherein the retro-reflective layer comprie metal material, and wherein a portion of the retro-reflective layer i electively removed o a not to interfere with the operation of the RFID tag module. 12. The RFID enabled licene plate of claim 1, further compriing pot configured to connect the licene plate to a vehicle, wherein the pot hort the metal licene plate to the vehicle Such that the vehicle act a a ground plane. 13. A RFID enabled licene plate, compriing: a metal licene plate; a lot formed in the metal licene plate; and a RFID tag module poitioned in the lot, the RFID tag module compriing a chip and contact, the contact connected with the metal licene plate. 14. The RFID enabled licene plate of claim 13, wherein the contact are connected with the metal licene plate via conductive pate. 15. The RFID enabled licene plate of claim 13, wherein the are electrically connected with the metal licene plate via a older connection. 16. The RFID enabled licene plate of claim 13, where the RFID tag module comprie an encloure. 17. The RFID enabled licene plate of claim 13, wherein the encloure i made from a non-metallic material. 1. The RFID enabled licene plate of claim 13, wherein the encloure include an air gap. 19. The RFID enabled licene plate of claim 13, wherein the RFID tag module further comprie a pacer within the encloure. 20. The RFID enabled licene plate of claim 19, wherein the pacer i made from a dielectric material. 21. The RFID enabled licene plate of claim 13, further compriing a plurality of lot formed in the metal licene plate, wherein each lot i configured to reonate at a different frequency, and wherein the RFID tag module i poitioned within one of the plurality of lot. 22. The RFID enabled licene plate of claim 13, further compriing a retro-reflective layer over the metal licene plate. 23. The RFID enabled licene plate of claim 22, wherein the retro-reflective layer comprie metal material, and wherein a portion of the retro-reflective layer i electively removed o a not to interfere with the operation of the RFID tag module. 24. The RFID enabled licene plate of claim 13, further compriing pot configured to connect the licene plate to a vehicle, wherein the pot hort the metal licene plate to the vehicle Such that the vehicle act a a ground plane. 25. A RFID enabled licene plate, compriing: a licene plate; a retro-reflective layer formed over the licene plate: a lot formed in the retro-reflective layer; and a RFID tag module poitioned in the lot, the RFID tag module compriing a chip and a loop, the loop coupled with the retro-reflective layer. 26. The RFID enabled licene plate of claim 25, wherein the loop i coupled with the retro-reflective layer via inductive coupling. 27. The RFID enabled licene plate of claim 25, wherein the loop i coupled with the retro-reflective layer via capaci tive coupling. 2. The RFID enabled licene plate of claim 25, where the RFID tag module comprie an encloure. 29. The RFID enabled licene plate of claim 2, wherein the encloure i made from a non-metallic material. 30. The RFID enabled licene plate of claim 2, wherein the encloure include an air gap. 31. The RFID enabled licene plate of claim 2, wherein the RFID tag module further comprie a pacer within the encloure. 32. The RFID enabled licene plate of claim 31, wherein the pacer i made from a dielectric material. 33. The RFID enabled licene plate of claim 25, further compriing a plurality of lot formed in the retro-reflective layer, wherein each lot i configured to reonate at a different frequency, and wherein the RFID tag module i poitioned within one of the plurality of lot. 34. The RFID enabled licene plate of claim 25, wherein the licene plate i a metal licene plate. 35. A RFID enabled licene plate, compriing: a licene plate; a retro-reflective layer formed over the licene plate: a lot formed in the metal licene plate; and a RFID tag module poitioned in the lot, the RFID tag module compriing a chip and contact, the contact connected with the metal licene plate. 36. The RFID enabled licene plate of claim 35, wherein the contact are connected with the retro-reflective layer via conductive pate. 37. The RFID enabled licene plate of claim 35, wherein the are electrically connected with the retro-reflective layer via a older connection. 3. The RFID enabled licene plate of claim 35, where the RFID tag module comprie an encloure. 39. The RFID enabled licene plate of claim 35, wherein the encloure i made from a non-metallic material. 40. The RFID enabled licene plate of claim 35, wherein the encloure include an air gap.

12 US 2009/ A1 Jan. 22, The RFID enabled licene plate of claim 35, wherein layer, wherein each lot i configured to reonate at a different the RFID tag module further comprie a pacer within the frequency, and wherein the RFID tag module i poitioned encloure. within one of the plurality of lot. 42. The RFID enabled licene plate of claim 41, wherein 44. The RFID enabled licene plate of claim 35, wherein the pacer i made from a dielectric material. the licene plate i a metal licene plate. 43. The RFID enabled licene plate of claim 35, further compriing a plurality of lot formed in the retro-reflective ck