There’s nothing particularly Android-specific about NFC tags — they’re far too useful to be so narrowly appreciated. Near-Field Communication tags are little devices (stickers, cards, keychain fobs, coin-sized tags, etc.) that can exchange information with an NFC reader from a little more than four inches away. The typical use case is like this: an NFC chip is affixed to a desk. When you enter the room and put your phone on the NFC tag, an automation routine is triggered that changes lighting, opens blinds, starts the coffee maker, or whatever. NFC is capable of two-way communication, but for the most part, its smart home uses are one-way affairs.
There are a shocking number of sensible uses for NFC tech. One might manage reminders for various tasks with appropriately placed tags — an automated reminder to take out the trash, take meds, or feed your cats will hound you until you tap the tag with your smartphone to indicate the task is done. Or you might tap a tag in your car to kick off automation that opens your garage door or changes your home HVAC settings to prepare for your arrival.
Android devices have one minor and one major advantage when using NFC tags. The setup is easier on Android than on iOS, and it’s more secure. Android 10 added smart NFC functionality, which requires the phone to be unlocked to use NFC.
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