Using the TREZOR simulator
You can install the TREZOR emulator and use it with MetaMask. Here is how:
1 - Install the TREZOR Bridge​
Download the corresponding bridge for your platform from this url
2 - Download and build the simulator​
Follow this instructions: https://github.com/trezor/trezor-firmware/blob/master/docs/core/emulator/index.md
3 - Restart the bridge with emulator support (Mac OSx instructions)​
# stop any existing instance of trezord
killall trezord
# start the bridge for the simulator
/Applications/Utilities/TREZOR\ Bridge/trezord -e 21324 >> /dev/null 2>&1 &
# launch the emulator
~/trezor-core/emu.sh