PURPOSE: To set the limit value of the use frequency of a store and forward switching system with respect to each user by providing an OMR sheet (a mark sheet which is optically read) with a password mark code and providing a store and forward switching device with a means where the allowable use frequency of the OMR sheet is recorded.

CONSTITUTION: Contents of an OMR sheet 10 are transmitted to a store and switching device 3 from a facsimile terminal 1 through a switching network 2. When reading a password mark code 11 of the transmitted OMR sheet 10, a code collating part 31 in the store and forward switching device 3 retrieves a counter table 32 and takes out the preliminarily recorded allowable use frequency of the OMR sheet in accordance with the password mark code in this table. The code collating part 31 collates the taken-out allowable use frequency; and when this frequency is not 0, communication is permitted and this state is reported to a counter counting-down part 33. When receiving this report, this part 33 counts down the pertinent allowable use frequency by one. If the allowable use frequency is 0, the code collating part 31 informs a communication rejecting part 34 that communication is impossible, and this means 34 executes communication reject procedures.