Patent attributes
A method stores, at a first computer system, first data associated with a user, a first portion of a first account number associated with the first data, and third data associated with the first data. An identity of the user is unidentifiable from the first data. The method receives, at the first computer system, a second portion of a second account number from a second computer system, second data generated by the second computer system based on electronically obtained identification information. The method transmits, by the first computer system, a message associated with the user based on the third data when the second data corresponds to the first data and the second portion of the second account number corresponds to the first portion of the first account number. The message is for completing a transaction, preventing a crime, making a statement, triggering a response, and/or giving an instruction.
