• 2 min read
UChicago’s BloomBeacon makes touchscreens appear on demand
University of Chicago researchers built BloomBeacon, a device with spinning soft arms that creates a temporary interactive touchscreen when needed.
Image: TechXplore
A University of Chicago team has built a device that turns a small box into a temporary interactive touchscreen. Called BloomBeacon, it uses two soft spinning arms—one lined with LEDs and the other touch-sensitive—to create a display that appears only when needed, then disappears.
The project comes from UChicago graduate student Willa Yang, supervised by assistant professor Ken Nakagaki in the university’s AxLab. The group focuses on weaving technology into everyday environments rather than forcing people to adapt to fixed devices.
“Screens are a powerful medium for displaying digital information and supporting interaction, but we either need to carry them, as with phones and tablets, or dedicate space for them in the environment, which creates visual clutter and limits where interaction can happen.” “BloomBeacon blooms into a larger surface only when needed. This keeps our environments responsive without permanent screens or clutter.”
How BloomBeacon works
Inspired by science fiction, BloomBeacon expands from a slim line on top of the device into a touch-responsive display using persistence-of-vision motion. The arms are intentionally soft, and the researchers say they are designed to spin down if they hit an obstacle such as a user’s arm or hair.
The team imagines several uses in schools, libraries, and design offices. A paper map could gain temporary overlays like weather or heat maps. A speaker could show album art and touch controls. On a shelf, the system could display safety warnings; the researchers demonstrated one case where BloomBeacon detects someone reaching for a bottle of chemicals without safety gloves and shows an alert.
Recommended reading
AMD tests 8x frame generation for future Radeon GPUs
“This can allow everyday environments to become interactive without being permanently filled with screens. The concept broadens the possibility of where interactive content can be placed and tangibly interacted with.”
The work was presented as “BloomBeacon: Blooming Physical Touch Display Surfaces via Persistence-of-Vision Motion” at CHI2026. Yang said future versions could use faster sensors and smarter algorithms, potentially shrinking a display down to a dot until context calls it into view.
“People should be able to shape their environments instead of adapting themselves to fixed technologies.”
Computing Editor
Tomas lives in the terminal. He covers chips, laptops, and operating systems with a focus on performance and efficiency. He reads kernel changelogs the way other people read fiction, and he's always on the hunt for the perfect mechanical keyboard switch. If it processes data, Tomas has an opinion on it.
via TechXplore
