LastSignal
A self-hosted, zero-knowledge dead man's switch
Details
- External ID
- 46796906
- Source
- HN
- Company
- —
- Product
- LastSignal
- Website domain
- lastsignal.app
- Launched
- Jan. 28, 2026
- Cohort
- —
- Upvotes
- 5
- Upvotes percentile
- 0.09617918313570488
- Tags
- —
- Fetched at
- Sept. 7, 2026, 9:25 p.m.
- Updated at
- Sept. 7, 2026, 9:25 p.m.
Enrichment
- Theme
- systems tools and desktop utilities
- Vertical
- Horizontal
- Function
- —
- Audience
- B2C
- AI stance
- Not AI
- Project type
- Commercial product
- Normalized one-liner
- self-hosted dead man's switch
- Manually corrected
- False
Could you build this?
Yes LastSignal is a web app combining client-side WebCrypto (Argon2id and XChaCha20 via standard JS libraries) with scheduled cron jobs and transactional email check-ins to release encrypted payloads upon timeout.
Discussion
1 comment analyzed.
Competitors
Other products that read as similar to this one — 1487 launches clear the similarity bar, closest 8 shown.
Attention rank: #1387 of 1488 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).
Launched 89 days after the earliest competitor.
- switchvisor · github · 2026-09-14 · 8 upvotes · similarity 0.57
- ha-mindclip · github · 2026-09-11 · 11 upvotes · similarity 0.51
- openmuse · github · 2026-09-10 · 33 upvotes · similarity 0.51
- X · hn · 2026-06-15 · 5 upvotes · similarity 0.50
- Android-on-Device Harness · hn · 2026-09-28 · 6 upvotes · similarity 0.50
- Homebutler · hn · 2026-04-05 · 5 upvotes · similarity 0.49
- Atomic · hn · 2026-03-21 · 152 upvotes · similarity 0.49
- Lossless-memory · hn · 2026-09-21 · 67 upvotes · similarity 0.49
Other launches for this product
- No other launches for this product.