A first information recorder comprises a limited number-of-times of copying information setting unit for setting information on the limited number-of-times of copying electronic data, a first limited number-of-times of copying information updating unit for reading out the electronic data from a first information recording medium containing electronic data set with limited number of times of copying information by the limited number-of-times of copying information setting unit and updating the limited number-of-times of copying information set with respect to the electronic data, and a first transmitter for transmitting electronic data whose limited number-of-times of copying information is updated by the first limited number of times of copying information updating unit. A second information recorder comprises a second receiver for receiving electronic data transmitted from the first transmitter, a second limited number-of-times of copying information updating unit for reading out the electronic data from a second information containing medium recording the electronic data and updating the limited number-of-times of copying information set with respect to the electronic data, and a second transmitter for transmitting electronic data whose limited number-of-times of copying information is updated by the second limited number-of-times of copying information updating unit.