Browser-Based Tempest
Transmitting VHF Morse via Monitor EMI Leakage
Details
- External ID
- 49598239
- Source
- HN
- Company
- —
- Product
- Browser-Based Tempest
- Website domain
- github.com
- Launched
- Sept. 7, 2026
- Cohort
- —
- Upvotes
- 5
- Upvotes percentile
- 0.12998405103668262
- Tags
- —
- Fetched at
- Sept. 11, 2026, 7:31 p.m.
- Updated at
- Sept. 11, 2026, 7:31 p.m.
Enrichment
- Theme
- web development and browser utilities
- Vertical
- Security
- Function
- Hardware & robotics
- Audience
- Developer
- AI stance
- Not AI
- Project type
- Hobby / open-source project
- Normalized one-liner
- morse transmission via monitor emissions
- Manually corrected
- False
Could you build this?
No Using monitor electromagnetic interference (TEMPEST) leakage triggered via browser pixel rendering to transmit radio signals requires specialized RF physics and low-level graphics hardware timing.
What it would actually take: This exploit requires calculating exact pixel clock frequencies, refresh rates, and display interface (HDMI/DisplayPort) differential signaling harmonics, then writing specialized WebGL shaders to alternate high-contrast raster patterns precisely timed to modulate VHF carrier waves. Accomplishing this requires deep signals analysis, RF electrical engineering, and low-level display driver hardware expertise.
Discussion
No comments on this launch.
Competitors
Other products that read as similar to this one — 345 launches clear the similarity bar, closest 8 shown.
Attention rank: #291 of 346 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).
Launched 294 days after the earliest competitor.
- Rdio · hn · 2026-08-14 · 27 upvotes · similarity 0.54
- MorseApp · github · 2026-09-09 · 9 upvotes · similarity 0.52
- Blotter, a live map of LAPD radio activity · hn · 2026-04-28 · 8 upvotes · similarity 0.52
- SDR-Lab-2.0 · github · 2026-09-20 · 17 upvotes · similarity 0.50
- Onda, an internet radio TUI with stream quality selection · hn · 2026-07-01 · 6 upvotes · similarity 0.48
- Otto · hn · 2026-06-22 · 5 upvotes · similarity 0.48
- Agent FM · hn · 2026-05-12 · 9 upvotes · similarity 0.48
- Formally verified FPGA watchdog for AM broadcast in unmanned tunnels · hn · 2026-02-18 · 62 upvotes · similarity 0.46
Other launches for this product
- No other launches for this product.
Same idea, different domain
Nobody's really built a hardware & robotics tool for Horizontal yet.