Your Heart Rate on Deck: New Plugin Streams Pulse to Steam Deck Screen
Your Steam Deck is about to know exactly how scared you are. A new Decky Loader plugin from Reddit developer Junior-Doctor-9102 streams live heart rate data from an Apple Watch directly onto the Deck’s screen. Picture creeping through Resident Evil 2 on the 7-inch display while your own pulse ticks away in the corner. The module supports eight on-screen positions and runs light enough to avoid meaningful battery drain, a critical advantage for handheld players who measure their AAA sessions in hours, not minutes.
Biofeedback Finds Its Handheld Home
The heart-rate plugin adds a fourth immersion dimension alongside audio, screen quality, and ergonomics: real-time anxiety tracking. The intimate handheld form factor amplifies the effect—your own pulse flickering in the corner of a horror game hits differently than the same readout on a TV. The plugin supports eight on-screen positions so players can tuck it away from HUD elements, and because it runs as a lightweight Decky module, the battery penalty should be negligible. Apple Watch is the starting point, but the community is already demanding Garmin and Android smartwatch parity—a signal that handheld gamers increasingly expect their devices to function as health-aware companions, not just game machines.
Apple Watch First, Garmin Next
The plugin is still a work-in-progress. Junior-Doctor-9102 shared a UI screenshot showing a toggle panel with location presets, and enabling it requires a launch option—standard Decky mod territory. No release date is set, but community reception has been overwhelmingly positive, with users requesting transparent overlays, dynamic color shifts across heart-rate zones, and broader wearable support. The developer also hinted at Twitch streaming integration, a natural fit for creators already using the Deck’s built-in recording for on-the-go streaming. When this lands in the Decky Loader catalog, it won’t be a gimmick—it’ll be the first credible bridge between handheld gaming and wearable biometrics.