Suspending and Resuming a Card Computing Device

A system, comprising:

• at least one device including a hardware processor;
• and
• the system being configured to perform operations comprising:
• receiving, from a terminal, a request to suspend a card computing device, the request to suspend including a proposed value for a suspension interval;
• transmitting, to an applet executing on the card computing device, a notification indicating the request to suspend is received;
• receiving, from the applet, a response to the notification, the response to the notification comprising a negotiated value for the suspension interval;
• storing state information associated with the card computing device into non-volatile memory associated with the card computing device;
• suspending the card computing device by removing power from the card computing device;
• receiving, from the terminal, a request to resume the card computing device;
• determining a current suspension interval based on a first time associated with the request to resume and a second time associated with suspending the card computing device;
• determining whether the current suspension interval is valid based on at least one of the proposed value for the suspension interval and the negotiated value for the suspension interval;
• performing one of:
• responsive to determining that the current suspension interval is valid based on at least one of the proposed value for the suspension interval and the negotiated value for the suspension interval:
• resuming a state based on the state information stored in the non-volatile memory;
• responsive to determining that the current suspension interval is not valid based on at least one of the proposed value for the suspension interval and the negotiated value for the suspension interval:
• refraining from resuming the state based on the state information stored in the non-volatile memory.

A non-transitory computer readable medium comprising instructions which, when executed by one or more hardware processors, cause performance of operations comprising:

• invoking a selection method to select an applet on a particular logical channel of a plurality of logical channels associated with a card computing device;
• receiving, from a terminal, a request to suspend the card computing device;
• storing state information associated with the card computing device into non-volatile memory associated with the card computing device, wherein the state information specifies that the applet has been selected on the particular logical channel;
• suspending the card computing device by removing power from the card computing device;
• receiving, from the terminal, a request to resume the card computing device;
• obtaining the state information from the non-volatile memory associated with the card computing device;
• responsive to determining the state information specifies that the applet has been selected on the particular logical channel:
• executing the applet on the particular logical channel without invoking the selection method for the applet.