The future of hardware wallet integration with mobile apps like Mycelium is likely to expand beyond current USB-OTG and Bluetooth protocols. Emerging standards like NFC (Near Field Communication) could allow for even simpler and more secure tap-to-sign interactions between a phone and a hardware device. This would enhance both usability and security, as the communication range is extremely short, reducing the potential for remote attacks. The mycelium wallet’s development team is likely to adopt these new standards as they become available in popular hardware wallets. This continuous improvement in interoperability ensures that Mycelium remains at the forefront of secure mobile Bitcoin management, offering users the best available technology to protect their keys while maintaining the convenience of a mobile interface.