Hiyd attaches health tracker to watch backs without adhesive
Former Apple engineers have developed Hiyd, a health tracker that attaches to existing watches using microsuction technology. The device collects data without magnets or glue.

Hiyd, a company founded by former Apple engineers, has introduced a new health tracker designed to attach to the back of existing watches without using magnets or adhesive. The device aims to enable health data collection without requiring users to replace their preferred timepieces.
The technology behind Hiyd utilizes microsuction, a material that allows the sensor to sit flush against the watch's casing. This method employs a textured silicone with hundreds of tiny pockets per square inch, creating a secure attachment without residue or interference with traditional watch mechanisms.
Salah Batroukh, founder of Hiyd, stated that the company's ethos is to integrate health tracking into users' lives discreetly. "We don’t think that health tracking needs to be this overly conscious decision where you have to change something about the way you look," Batroukh told TechCrunch. Hiyd intends to build an ecosystem of products for "invisible" health monitoring.
The new Hiyd device is a small, slim disc that affixes to the watch's rear. It captures biometric data and syncs it with a smartphone application. The company's goal is to allow individuals to monitor their health while continuing to wear their chosen analog or smartwatches, avoiding the need for separate, often bulkier, fitness-focused wearables.