These metal washers are replacing smart home sensors, and they work without a single wire or battery
Researchers at Georgia Tech have developed a new type of sensor that could revolutionize smart home technology. These tiny, metal washers operate without batteries or wires, using ultrasonic frequencies to detect events like drawer openings. This innovation aims to eliminate the hassle of battery maintenance in smart home devices while enhancing user privacy.
- ▪The new sensors are penny-sized metallic discs that do not require batteries or circuit boards.
- ▪They utilize ultrasonic fingerprints to communicate, potentially transforming the smart home industry.
- ▪This technology could significantly reduce the need for frequent battery replacements in smart home devices.
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Record
| Original publisher | XDA Developers |
| Canonical URL | https://www.xda-developers.com/coin-sized-sensors-could-eliminate-smart-home-batteries-forever/ |
| Publication time | Sun, 24 May 2026 16:30:22 GMT |
| Retrieval time | 2026-05-24T16:32:33.303Z |
| Last seen | 2026-05-24T16:32:33.303Z |
| Headline source | Publisher (no WeSearch rewrite) |
| Excerpt source | publisher body |
| Excerpt method | First ~120 words (~800 chars) of extracted publisher body, fair-use limited. |
| Summary | WeSearch · cerebras-chat (WeSearch summarizer) |
| Summary source text | contentText |
| Citation coverage | Summary is a WeSearch-generated derivative; primary citation is the original publisher URL. |
| Cluster | jhThHxobyfZu |
| Cluster logic | Grouped by semantic title/content similarity across sources within a rolling window. Same-publisher template collisions are excluded from coverage comparison. |
| Ranking reason | Story pages are not engagement-ranked. Hub feeds use recency, with optional source-diversified chronological ordering (cap consecutive stories per source). No personalized ranking. |
| Publisher visit | Yes — open original |
| Substitutes article? | No — link-out required for full text |
Rights status (four layers)
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| Indexing | May the item be indexed (stored, ranked, made findable)? | Allowed |
| Snippet | May a short excerpt of the publisher's text be shown? | Allowed |
| AI summary | May WeSearch generate its own short summary of the article? | Limited |
| Retrieval / RAG | May the content be exposed for third-party retrieval-augmented generation? | Not asserted |
| Model training | May the content be used to train AI models? | Not asserted |
| Commercial reuse | May the content be reused commercially? | Not permitted |
Basis: Derived from the published RSS/Atom feed. Contact: [email protected]. Reviewed: 2026-07-24.
Opening excerpt (first ~120 words) tap to expand
{ "@context": "https://schema.org", "@type": "BreadcrumbList", "itemListElement": [ { "@type": "ListItem", "position": "1", "name": "Home", "item": "https://www.xda-developers.com/" }, { "@type": "ListItem", "position":"2", "name": "Smart Home", "item": "https://www.xda-developers.com/smart-home/" }, { "@type": "ListItem", "position":"3", "name": "These metal washers are replacing smart home sensors, and they work without a single wire or battery", "item": "https://www.xda-developers.com/coin-sized-sensors-could-eliminate-smart-home-batteries-forever/" } ] } These metal washers are replacing smart home sensors, and they work without a single wire or battery Credit: Yibo Fu By Jasmine Mannan Published May 24, 2026, 12:30 PM EDT Jasmine is Software and PC Hardware Author at XDA with years…
Excerpt limited to ~120 words for fair-use compliance. The full article is at XDA Developers.
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