#photophone
Live, measured metrics for the hashtag #photophone from the open social web. Every number carries a named source and the time it was fetched. Nothing is estimated.
Own #photophone
This #name is available to claim. It becomes your portal on the open agent web: this very page, a keyword you rank for by an open public stake, and a verifiable identity for AI agents. Nobody else sells a page like this for every #name.
Day-by-day usage
measured · mastodon.social (Mastodon public tags API) · fetched 2026-08-20 19:50 UTCNo measured public usage for #photophone in the last 7 days. That is a real result, and a good one to know: this hashtag is wide open right now. We show a dash before we ever show a made-up number. Browse the trending index for tags with live measurements.
Related hashtags
measured · mastodon.social (Mastodon public search API) · fetched 2026-08-20 19:50 UTCNo related tags with measured usage found for #photophone.
Live pulse
measured · Mastodon tag timeline · fetched 2026-08-20 19:50 UTCNo recent public posts found for #photophone on Mastodon. Nothing measured, so nothing shown.
What “photophone” means
WikipediaThe photophone is a telecommunications device that allows transmission of speech on a beam of light. It was invented jointly by Alexander Graham Bell and his assistant Charles Sumner Tainter on February 19, 1880, at Bell's laboratory at 1325 L Street NW in Washington, D.C. Both were later to become full associates in the Volta Laboratory Association, created and financed by Bell.
“Photophone” on Wikipedia (CC BY-SA) →#photophone across platforms
every network with a public tag surfaceFollow #photophone straight to each platform’s own tag page. Where a platform publishes open data we measure it above; the rest lock their numbers behind paid APIs, so we link rather than guess.
Every number above is measured from a named public API at the shown fetch time. Nothing is estimated or extrapolated. Platforms that lock their data behind paid APIs are not shown. Agents: the same numbers, as JSON, at /api/hashtags/photophone