Sticker QR links count opens by day and sticker batch. Daily aggregate counters record page visits, part openings, eBay link taps and approximate browser sessions by broad promotion source. Separate daily AI counters distinguish ChatGPT, Perplexity, Copilot, Gemini and Claude actions when an approved source label or exact referring hostname is available. Only a fixed AI source label and last-action time are retained for 30 minutes; raw referral URLs, searches and click IDs are never stored or sent. Separate daily ad counters distinguish the public KTM 250 and 450 Google promotion labels for visits, part openings and eBay taps; these are repeat-inclusive actions, not confirmed ad clicks or purchases. A session starts after 30 minutes without a tracked action; returning sessions mean this browser has been seen before, not a confirmed returning person. This browser stores only a local last-activity timestamp and seen flag separately for public and test browsing, plus an owner opt-out preference and, when present, an approved public ad or AI source label with its last-action time. Ad attribution expires after 30 minutes of inactivity or an explicit different-source arrival; no Google click identifiers are stored. No session identifiers, tracking cookies, IP addresses, searches or customer data are stored in these counters. Repeat visits, multiple tabs or devices, cleared or blocked storage and shared browsers affect these estimates; they are not unique people or purchases. Blocked storage keeps action counts working without adding session estimates. Open any page with ?internal=1 to persistently exclude this browser from page, part, eBay-tap and session events, or ?internal=0 to resume those counts. Do Not Track and Global Privacy Control suppress browser analytics storage and events. Server-side sticker QR open counters respect ?internal=1 and the Do Not Track or Global Privacy Control headers; they cannot read this browser’s stored owner preference. Chat is disabled. Seller links open eBay in another tab. Part photos load from eBay's image service. Cloudflare hosts this site and may process ordinary connection data.