Abstract: A system for executing actions includes a database established with a plurality of reference strings and correspondence of each of the reference strings to at least one predefined action, and a mobile device communicatively coupled with the database. The mobile device includes an input unit for inputting a to-be-compared string, and a processor electrically coupled with the input unit. The processor is configured to search the database to find a string set of one or more of the reference strings that matches the to-be-compared string, and execute the at least one predefined action corresponding to the one or more of the reference strings of the string set found by the processor.