Not very secure either, but pair a miband4 with smart unlock. 3-4 weeks of battery life, works with gloves and masks/scarves. Keep keychain or throw it in backp

Not very secure either, but pair a miband4 with smart unlock. 3-4 weeks of battery life, works with gloves and masks/scarves. Keep keychain or throw it in backpack. The 1st party app lets you adjust unlock distance by range. Anyone in range can unlock your device, but works well in terms of convenience.