Mobile device security using wearable security tokens

A computer system comprising:

• one or more processors;
• and
• one or more computer-readable hardware storage devices having stored thereon computer-executable instructions, the computer-executable instructions being executable by the one or more processors to cause the computer system to:
• detect a presence of a transaction processing device;
• receive transaction information from the transaction processing device, the transaction information corresponding to a current transaction event occurring between the computer system and the transaction processing device;
• after receiving the transaction information, establish a communication link with an on-body security device, the on-body security device including a root key usable to unlock locked information stored on the computer system, the locked information being necessary to complete the transaction event;
• receive, via the communication link, the root key from the on-body security device, wherein the received root key has a time-limited use availability, and wherein the received root key is stored in memory of the computer system;
• use the received root key to unlock the locked information, wherein the current transaction event is subsequently completed using the unlocked locked information;
• and
• delete the received root key from the computer system's memory.

A method for completing a transaction event using authentication information, the method being implemented by one or more processors of a computer system, the method comprising:

• detecting a presence of a transaction processing device;
• receiving transaction information from the transaction processing device, the transaction information corresponding to a current transaction event occurring between the computer system and the transaction processing device;
• after receiving the transaction information, establishing a communication link with an on-body security device, the on-body security device including authentication information that is necessary to complete the current transaction event;
• receiving, via the communication link, the authentication information from the on-body security device, wherein the received authentication information has a time-limited use availability;
• and
• using the received authentication information to complete the current transaction event.