PhotoTag

Most Bluetooth trackers are blank plastic tokens. PhotoTag adds an E-Ink (electronic paper) display, which the maker positions as the feature that sets it apart: the tag can show owner information, a digital business card, a QR code or original text. According to the campaign, the Kickstarter project raised about $244,529, more than 48 times its goal.

Why E-Ink

Unlike a backlit phone screen, E-Ink is read by reflected light. The maker says this keeps the display clear even in direct sunlight while holding down power consumption, so the tag can serve as a personal display as well as a tracker.

Tracking basics

PhotoTag connects to a smartphone over Bluetooth through a dedicated app. According to the maker, within Bluetooth range the app shows an item's location in real time; out of range, it shows where the tag was last connected. The tag also has a built-in speaker that can be triggered from the app when within range, aimed at items lost in sofa cushions or deep in a bag.

A business card on your keyring

The campaign pitches the display as a replacement for paper business cards: show a name and company, or set a QR code that others can scan with a phone to get contact or social media details. Because the content can be updated, the maker suggests using it at conferences, trade shows and seminars, with different information for different projects.

• Battery life of up to 10 months, according to the maker
• IP65-rated water resistance, intended to handle rain and splashes
• Small, lightweight design meant to attach to keys, backpacks, briefcases or suitcases

The source also floats possible future directions, including GPS for more precise tracking, NFC for tap-to-share data and more customizable display features. These are described as potential updates, not confirmed features.