At the time of this posting there's currently no hardware wallet available that supports the WAVES platform. Rumor has it Satoshi Labs, the makers of the Trezor Hardware Wallet are working on support for Waves. Ledger, who makes the Ledger Nano S Hardware Wallet; is also working to provide support. Pure speculation, but its estimated that a hardware wallet for Waves will be available by the end of Q1 2018. However, no specific date/s have been made public. We'll update this blog post as more information becomes available. Feel free to comment down below if you know of a hardware wallet that supports Waves!