A normal pet license tag forces you to decide if you want to include a phone number for anyone to see. The water-resistant PetHub NFC tag is more private. The tag includes a code, which the finder uses to look up your phone number and e-mail. With a tap, someone with an Android phone, such as the HTC One, can read the info over near-field communication (NFC) or snap the QR code. [$20; pethub.com]
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