Lost Item Finder Robot: ABB Robots and the Missing Keys

Everyone has stood in the hallway, patting pockets and swearing at the couch cushions. A lost item finder robot is the newest answer to that daily annoyance. On October 20, 2026, The Verge reported on the Voxel Series-1, a $20,000 humanoid that a New York startup says will remember where it last saw your remote. This post follows the idea from whistle-activated key rings to Bluetooth tags, then looks at what ABB's vision-guided robots already do, and what has to change before a robot can search a home. The short version is that the tags are cheap and proven, while the robot is expensive, unfinished and still a promise.

A set of keys left hanging from a utility pole, the everyday problem behind the lost item finder. Photo: Paul Sableman / Wikimedia Commons (CC BY 2.0)

From whistle key rings to a tag in your pocket

The first electronic key finders were simple. According to the Wikipedia entry on key finders, early models listened for a clap or a whistle and answered with a beep. They were unreliable and soon dropped. Later versions used a separate transmitter to wake a receiver on the keys, but they needed fresh batteries every three months to a year. Both designs had the same weakness: you had to be within earshot of the thing you had lost, and the keys had to be awake. Anything that sat under a pile of coats or inside a drawer stayed hidden, and a dead battery meant the finder was as lost as the keys.

A keyring electronic key finder, an early type of gadget built to give away where your keys are. Photo: Moovie / Wikimedia Commons (public domain)

Tile changed the format. The company was founded in December 2012 by Mike Farley and Nick Evans, and its first devices were delivered in 2013. A Tile broadcasts a Bluetooth low energy signal with a unique ID, and any nearby phone running the app can report where it was last seen. That turned every phone into a search party. The tag could not look for anything itself, but it gave a last known location instead of a guess. Tile later added tags that clip to keys, slip into wallets and stick to devices, and Life360 agreed to buy the company in November 2021 for $205 million.

A Tile Sport Bluetooth tracker, the kind of tag that reports its last known location through nearby phones. Photo: Gregory Varnum / Wikimedia Commons (CC BY-SA 4.0)

Apple's AirTag took the idea mainstream. The first generation went on sale on April 30, 2021 at $29, and a second generation followed on January 26, 2026. AirTags rely on a crowdsourced network of Apple devices, estimated at about one billion in early 2021, to relay anonymous Bluetooth signals. On newer iPhones, ultra-wideband gives direction and distance. The same convenience raised stalking worries, so Apple added alerts when an unknown AirTag travels with you, and an unattended tag now beeps after 8 to 24 hours. Bluetooth range is estimated at about 30 meters, so the tag has to be near someone's phone to report in.

An iPhone showing the AirTag setup screen beside a white AirTag, 2021. Photo: Swisshashtag / Wikimedia Commons (CC BY-SA 4.0)

A robot that looks instead of listens

Tags only work if you attach them to everything, and nobody tags the TV remote, the reading glasses and the left sock. That gap is what the Voxel pitch goes after. Tuesday Labs, a New York robotics lab and design studio, is taking $200 reservations for a bipedal robot with two seven-degree-of-freedom arms, stereo cameras and a wide-field camera. The company says you could ask where it last saw an object. Deliveries are not expected until 2028, and the price is about $20,000. Reports add that it will ship only to customers in the United States at first, and that it will not cook or handle jobs as complex as changing diapers at launch.

An iRobot Roomba i7+ on display, one of the robots that already roam homes on their own. Photo: Auledas / Wikimedia Commons (CC BY-SA 4.0)

These are the company's claims, and no one has independently tested them. Early reactions questioned both the price for finding keys and the privacy of a camera-equipped robot that watches a room all day. A robot that answers "where did you last see my remote?" has to keep a record of what it sees, and that record is exactly what a privacy-minded household may not want stored. Voxel's cameras are hidden, which makes the question harder to wave away. We covered the same question for ABB's controllers in home robot privacy.

ABB's Robotic Item Picker uses AI vision to grab unknown items from mixed bins. Photo: ABB

ABB does not sell a home robot, but the underlying skill, finding an item you were not told about, is working in its warehouse products. The Robotic Item Picker pairs a small ABB arm and a suction gripper with AI vision, and it picks items it has never seen before out of mixed bins. In effect it solves "which of these things is the right one, and where is it?" thousands of times a shift. Programs like this are normally built and tested first in RobotStudio before they touch real hardware. A home robot would face a far messier version of that task, because a bin is tidy and a living room is not.

An ABB Flexley Mover P604, which navigates with 3D Visual SLAM. Photo: ABB

What a home search robot still has to solve

Finding an object is only half the job. A home robot has to move through rooms, and ABB's Flexley Mover AMRs show how that is done on a factory floor. The Flexley Mover P604 navigates with 3D Visual SLAM, building a map from camera data so that it needs no tracks or magnetic tape. A home version would need the same map-making, plus a way to cope with moved chairs, pets and open doors, which a plant layout rarely has to allow for.

An ABB GoFa cobot loading parts into a machine at a small factory. Photo: ABB

Reaching and gripping are the next problem. The ABB GoFa CRB 15000 is a collaborative arm with a 5 kg payload that works beside people and stops on contact, and the same safety thinking applies in a house. Research platforms such as the PAL Robotics TIAGo, a wheeled base with an arm, show the combination of a mobile base and manipulator exists today. What is missing is a version at household prices that can safely lift a mug from under a sofa. Every extra joint and sensor adds cost, and every moving arm in a room with children needs a safety case.

A PAL Robotics TIAGo mobile manipulator, a wheeled base with two arms used in research. Photo: PAL Robotics / Wikimedia Commons (CC BY-SA 4.0)

Progress over the next few years will probably be gradual. Tags keep improving: the second-generation AirTag already extends range. Robots that tidy and find items will probably appear in pilots before they reach most living rooms, and the early ones will be expensive. Anyone shopping for one should ask what it records, where the images are stored, and whether it still works with the camera switched off. For the tidying side of this story, read ABB Robots and Home Tidying.

A Ring video doorbell, a camera many homes already accept at the front door. Photo: Amin / Wikimedia Commons (CC BY-SA 4.0)

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