> ## Documentation Index > Fetch the complete documentation index at: https://docs.trytalkvalue.com/llms.txt > Use this file to discover all available pages before exploring further. # Walls overview > Live Slack channel display for venue TVs. Mirror one Slack channel to a public, no-login URL you can open on any screen. Walls turn a Slack channel into a venue-ready display. Each wall mirrors exactly one Slack channel: as messages arrive in Slack, they animate onto a fullscreen page you can open on any TV browser, projector, or kiosk. The page is at a public URL with a unique token (`/w/`). No login required to view it, so you can hand the URL to an AV team or load it on a TV without an admin signing in. ## When to use a wall * **Conference day.** Show the official event Slack channel on a sponsor TV so attendees see live questions, talk reactions, and announcements. * **Hackathon.** Point a wall at the `#submissions` channel so the room sees teams check in as they finish. * **User group meetup.** Project the `#meetup-chat` channel during talks so remote and in-room conversations mix. Walls are designed for short, event-day runs. Each wall is per-event, and you can delete it when the event is over. ## How a wall stays live Each wall keeps an open connection to TalkValue. When a new Slack message arrives in the mirrored channel, the page animates the message in within seconds. Deleted Slack messages disappear from the wall on the next refresh. The connection holds for up to 25 minutes per session, then the page reconnects automatically, so long-running displays don't need a manual refresh cycle. ## Branding a wall Each wall has its own branding controls: event name, venue/date line, optional logo image URL, optional QR code with a custom label, four theme presets, and a dark-mode toggle. Pick the combination during creation and update anytime from the wall's settings page. See [Create a wall](/spark/walls/create-wall). ## Public URL safety The wall URL contains a random display token, so the page is not discoverable from a directory or by guessing. If you ever need to invalidate a URL (for example, an old TV is still pointed at it after an event), regenerate the token from the wall settings. The old URL stops working immediately and a new one takes its place. ## Related * [Create a wall](/spark/walls/create-wall). The form fields and Slack channel pick. * [Display mode](/spark/walls/display-mode). Open the wall on a venue TV.