Answer to reset (ATR) pushing
View Patent ↗A wireless-enabled smart card reader receives an Answer to Reset (ATR) from a smart card and transmits the ATR using a wireless communication link to a computing device without waiting for an ATR request from the computing device. The computing device may cache the ATR and use it for subsequent communication sessions with the smart card.
1. A method for communicating an Answer to Reset (ATR) to a computing device by a wireless-enabled smart card reader, the method comprising:
receiving the ATR at the smart card reader from a smart card; and
transmitting the ATR from the smart card reader using a wireless communication link to the computing device without waiting for an ATR request from the computing device,
wherein the ATR is received at the smart card reader following an Open Session command received from another computing device, the method further comprising:
providing the ATR to the other computing device in response to a request for the ATR; and
caching the ATR at the smart card reader,
wherein transmitting the ATR from the smart card reader comprises transmitting the cached ATR from the smart card reader.
2. A computer-readable medium having stored thereon instructions which, when executed by a computing device, result in:
caching an Answer to Reset (ATR) of a smart card in a cache of the computing device upon receipt of the ATR via a wireless communication link from a wireless-enabled smart card reader; and
removing the ATR from the cache upon receipt of an indication that the smart card has been removed from the smart card reader.
3. A computer-readable medium having stored thereon instructions which, when executed by a computing device, result in:
caching an Answer to Reset (ATR) of a smart card in a cache of the computing device upon receipt of the ATR via a wireless communication link from a wireless-enabled smart card reader; and
removing the ATR from the cache in response to dropping a wireless connection with the smart card reader.
4. A method at a computing device comprising:
receiving at the computing device an Answer to Reset (ATR) of a smart card via a wireless communication link from a wireless-enabled smart card reader;
caching the ATR in a cache of the computing device; and
removing the ATR from the cache of the computing device upon receipt at the computing device of an indication that the smart card has been removed from the smart card reader.
5. A method at a computing device comprising:
receiving at the computing device an Answer to Reset (ATR) of a smart card via a wireless communication link from a wireless-enabled smart card reader;
caching the ATR in a cache of the computing device; and
removing the ATR from the cache of the computing device in response to dropping a wireless connection with the smart card reader.