Apple Wallet now supports room keys with some Hyatt hotels

Guests in select Hyatt hotels could now use keys in iPhone wallets to access their rooms.

Guests can hold their device near the door's NFC-enabled lock to access key card-protected areas, and with the Express Mode, an ‌iPhone‌ does not need to be unlocked to use the room key. Should their ‌iPhone‌ run out of battery, the Power Reserve feature allows it to continue to be used for unlocking the door for up to five hours. 

MacRumors

Reference: Apple Wallet Now Supports Hotel Keys From Some Hyatt Locations