[Former Mt. Gox CEO Reveals Plan to Develop Low-Cost Device to Detect Spy Implants in Ledger] Former Mt. Gox CEO Mark Karpelès announced on the X platform that he is developing a low-cost, easy-to-use device capable of detecting spy implants in hardware wallets without disassembling them. He plans to make the device's PCB design and specifications publicly available so that anyone can create it themselves.