Can my favorite Game Boy gadget tell fake cartridges from real?

Can my favorite Game Boy gadget tell fake cartridges from real?

The GB Operator. | Photo by Sean Hollister / The Verge The $50 Epilogue GB Operator has a brand-new trick up its sleeve. In addition to backing up Game Boy, Game Boy Color and Game Boy Advance cartridges and saves to a PC, it can now plug into your phone with a brand-new Retrace app for Android and iOS. The idea: check if cartridges are legit, and how much they're worth, before you buy or sell them. Is it reliable? I plugged around 50 cartridge…