Authenticated account interaction via text cellular text message

A method of authenticated reward program account interaction, the method comprising:

• receiving, by a computer system of a reward program exchange, a cellular text message sent from a cellular telephone of an accessing entity, wherein the cellular text message includes a cellular telephone number of the cellular telephone, an instruction regarding reward points, and an image file;
• using, by the computer system, the cellular telephone number to identify a reward program account;
• extracting, by the computer system, an authentication token embedded in data of the image file;
• authenticating, by the computer system, access to the reward program account based upon the authentication token;
• and
• responsive to authenticating access to the reward program account, executing, by the computer system, the instruction.

A non-transitory computer readable storage medium having computer readable program instructions stored thereon which, when executed, cause a computer system to perform a method of authenticated reward program account interaction, the method comprising:

• receiving, by a computer system of a reward program exchange, a cellular text message sent from a cellular telephone of an accessing entity, wherein the cellular text message includes a cellular telephone number of the cellular telephone, an instruction regarding reward points, and an image file;
• using, by the computer system, the cellular telephone number to identify a reward program account;
• extracting, by the computer system, an authentication token embedded in data of the image file;
• authenticating, by the computer system, access to the reward program account based upon the authentication token;
• and
• responsive to authenticating access to the reward program account, executing, by the computer system, the instruction.