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A case for holding a contactless smart card includes a set of plastic walls for defining a generally planar space. The space may be for housing one smart card or alternatively may be for housing two smart cards. The walls include two parallel walls which each have a planar extent that corresponds to

A case for holding a contactless smart card includes a set of plastic walls for defining a generally planar space. The space may be for housing one smart card or alternatively may be for housing two smart cards. The walls include two parallel walls which each have a planar extent that corresponds to a planar extent of the generally planar space. The two parallel walls include a first wall and a second wall. The first wall has an actuation region formed therein to permit a user's finger to actuate, through the first wall, a switch on the smart card. If the case is for holding two cards, then there is also an actuation region in the second wall. In some embodiments, the case may include additional spaces each for housing one or two cards.

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What is claimed is: 1. A case for holding a contactless smart card, the case comprising a set of plastic walls for defining a generally planar space for housing the smart card, the walls including two parallel walls each having a planar extent that corresponds to a planar extent of the generally pl

What is claimed is: 1. A case for holding a contactless smart card, the case comprising a set of plastic walls for defining a generally planar space for housing the smart card, the walls including two parallel walls each having a planar extent that corresponds to a planar extent of the generally planar space, the two parallel walls including a first wall and a second wall, the first wall having an actuation region formed therein, the actuation region for permitting a user's finger to actuate, through the first wall, a switch on the smart card, wherein the actuation region includes an aperture formed in the first wall, said aperture shaped and sized to allow a tip of the user's finger to pass through the first wall, said aperture occupying not more than substantially 100 mm2 of area of said first wall. 2. The case of claim 1, wherein: the generally planar space is deep enough to accommodate two smart cards housed back-to-back in the space; and the case further comprising an actuation region formed in the second wall, the actuation region formed in the second wall for permitting the user's finger to actuate, through the second wall, a switch on a second smart card, the actuation region in the second wall offset from the actuation region in the first wall in a direction parallel to the planar direction of the generally planar space. 3. The case of claim 2, wherein the case defines two generally planar spaces for each holding two smart cards back-to-back, each of the two walls having a pair of actuation regions formed therein, each of the actuation regions for permitting the user's finger to actuate, through a respective one of the walls, a switch on a respective one of the smart cards, each of the actuation regions offset from each of the other actuation regions in at least one direction parallel to a planar extent of the generally planar spaces. 4. The case of claim 3, wherein the case defines four generally planar spaces for each holding two smart cards back-to-back, each of the two walls having four actuation regions formed therein, each of the actuation regions for permitting the user's finger to actuate, through a respective one of the walls, a switch on a respective one of the smart cards, each of the actuation regions offset from each of the other actuation regions in at least one direction parallel to a planar extent of the generally planar spaces. 5. The case of claim 1, formed substantially of rigid plastic. 6. A case for holding a contactless smart card, the case comprising a set of plastic walls for defining a generally planar space for housing the smart card, the walls including two parallel walls each having a planar extent that corresponds to a planar extent of the generally planar space, the two parallel walls including a first wall and a second wall, the first wall having an actuation region formed therein, the actuation region for permitting a user's finger to actuate, through the first wall, a switch on the smart card; wherein the actuation region includes a depressable flap. 7. The case of claim 6, wherein the flap has a button formed on an inside surface of the flap. 8. A case for holding a contactless smart card, the case comprising a set of plastic walls for defining a generally planar space for housing the smart card, the walls including two parallel walls each having a planar extent that corresponds to a planar extent of the generally planar space, the two parallel walls including a first wall and a second wall, the first wall having an actuation region formed therein, the actuation region for permitting a user's finger to actuate, through the first wall, a switch on the smart card; wherein the actuation region includes a depressable button formed in the first wall. 9. A smart card assembly, comprising: a smart card that includes a user-actuatable switch; and a case in which the smart card is housed, the case including an actuation region adjacent the switch, the actuation region for permitting a user's finger to actuate the switch at a time when the smart card is inside the case; wherein the actuation region is one of: (a) an aperture formed in the wall of the case, said aperture occupying not more than substantially 100 mm2 of area of said wall; (b) a flap formed in the wall of the case; and (c) a depressable button formed in the wall of the case. 10. The smart card assembly of claim 9, wherein: the smart card is a first smart card; and the actuation region is a first actuation region; the assembly further comprising: a second smart card, the second smart card including a user-actuatable switch, the first and second smart cards housed back-to-back in a chamber formed by the case, the case including a second actuation region adjacent the user-actuatable switch of the second smart card, the second actuation region for permitting the user's finger to actuate the switch of the second smart card at a time when the second smart card is inside the case, the first actuation region formed in a first wall of the case, the second actuation region formed in a second wall of the case that is opposite the first wall. 11. The smart card assembly of claim 10, wherein: the chamber is a first chamber; the case also forming a second chamber in a common plane with the first chamber; the assembly further comprising: a third smart card; and a fourth smart card; the third and fourth smart cards housed back-to-back in the second chamber, the third smart card including a respective user-actuatable switch, the fourth smart card including a respective user-actuatable switch, the case including a third actuation region and a fourth actuation region, the third actuation region formed in the first wall adjacent the switch of the third smart card, the third actuation region for permitting the user's finger to actuate the switch of the third smart card at a time when the third smart card is inside the case, the fourth actuation region formed in the second wall adjacent the switch of the fourth smart card, the fourth actuation region for permitting the user's finger to actuate the switch of the fourth smart card at a time when the fourth smart card is inside the case. 12. The smart card assembly of claim 11, wherein the case also forms a third chamber and a fourth chamber, all of the first, second, third and fourth chambers in said common plane; the assembly further comprising: a fifth smart card; a sixth smart card; a seventh smart card; and an eighth smart card; the fifth and sixth smart cards housed back-to-back in the third chamber, the seventh and eighth smart cards housed back-to-back in the fourth chamber, the fifth smart card including a respective user-actuatable switch, the sixth smart card including a respective user-actuatable switch, the seventh smart card including a respective user-actuatable switch, the eighth smart card including a respective user-actuatable switch, the case including a fifth actuation region, a sixth actuation region, a seventh actuation region and an eighth actuation region, the fifth actuation region formed in the first wall adjacent the switch of the fifth smart card, the fifth actuation region for permitting the user's finger to actuate the switch of the fifth smart card at a time when the fifth smart card is inside the case, the sixth actuation region formed in the second wall adjacent the switch of the sixth smart card, the sixth actuation region for permitting the user's finger to actuate the switch of the sixth smart card at a time when the sixth smart card is inside the case, the seventh actuation region formed in the first wall adjacent the switch of the seventh smart card, the seventh actuation region for permitting the user's finger to actuate the switch of the seventh smart card at a time when the seventh smart card is inside the case, the eighth actuation region formed in the second wall adjacent the switch of the eighth smart card, the eighth actuation region for permitting the user's finger to actuate the switch of the eighth smart card at a time when the eighth smart card is inside the case. 13. The smart card assembly of claim 12, wherein each of the smart cards has a total surface area that is substantially equal to one-fourth of a total surface area of an ID-1 card. 14. A kit comprising: a smart card; and a carrying case for housing the smart card; the smart card including a user-actuatable switch, the carrying case including at least one wall that includes an actuation region formed in the wall, the actuation region located in the wall so as to be adjacent to the user-actuatable switch upon the smart card having been inserted in the carrying case, the actuation region for permitting a user's finger to actuate the switch when the smart card is in the carrying case; wherein the actuation region is one of: (a) an aperture formed in the wall of the case, said aperture occupying not more than substantially 100 mm2 of area of said wall; (b) a flap formed in the wall of the case; and (c) a depressable button formed in the wall of the case. 15. A method comprising: receiving a kit that includes a carrying case and a first card, the first card including a radio frequency identification (RFID) integrated circuit (IC) and a switch for actuating operation of the RFID IC, the carrying case including an actuation region located in a position in a wall of the carrying case, said position of said actuation region corresponding to a locus of the switch on the first card; storing a plurality of cards in said carrying case; each of said cards including a respective RFID IC, said plurality of cards including said first card; and presenting the case to a proximity reader while using a finger to actuate a switch on one of the cards to select said one of said cards for reading by the reader, said cards inside the case while the switch is being actuated. 16. The method of claim 15, wherein the plurality of cards includes four cards. 17. The method of claim 16, wherein the plurality of cards includes eight cards.