To provide a reading device and a reading system for discovering the forgery of an information code with much higher accuracy.

A reading device 30 includes: imaging means 3 for imaging a recording medium 50; decryption key storage means for storing a decryption key corresponding to an encryption key; decryption means for decrypting the data of at least a disclosed area Ca when a partial non-disclosed code C is imaged by the imaging means; predetermined information detection means for detecting predetermined information recorded in the disclosed area Ca; ink position detection means for detecting a special ink formation position to which special ink has been added in the recording medium; and determination means for determining whether or not the special ink formation position detected by the ink position detection means is a normal position. The decryption means outputs the decryption result of a non-disclosed area Cb under conditions that the decryption key is stored in the decryption key storage means when it is determined that the special ink formation position is a normal position by the determination means.