We rolled out OpenKey + Saflok RT on two floors last week; adoption hit 38% but we still reissue 20–25 plastic cards nightly due to BLE handshakes failing, mostly on iOS 17.6. If you’ve stabilized this, was it lock firmware, app SDK version, or pre-arrival onboarding (wallet passes vs app login) that moved the needle?
We stabilized RT by turning on fast‑connect and dropping the BLE advertising interval to about 200 ms with touch‑to‑wake; that cut iOS 17.6 timeouts about 60% with a small battery hit. Updating to the latest @OpenKey iOS SDK helped background scans, while Wallet passes lifted adoption but didn’t change failures — no more “wiggle‑the‑phone” dance. What’s your current adv interval on the RTs, and is fast‑connect enabled?
We traced most of the BLE “timeouts” to lock clock skew; after a full time sync on all RTs via Messenger LENS and pinning NTP, reissues dropped from about 25/night to 6 — like showing up with a ticket after the venue’s clock jumped… Are you pushing Wallet passes pre‑arrival and forcing a nightly time push, and checking for “time drift >90s” on the worst offenders? Small caveat: if you stick with the app, make sure Background App Refresh is enabled so credentials refresh.
Same issue after a two‑floor OpenKey+RT pilot; turning on RT “Fast Connect” and tightening the BLE advertising interval to about 100 ms in LENS moved us from about 20 reissues/night to single digits, but it needed OpenKey SDK 7.10.x to really stick on Apple 17.x… @liam_f54’s time‑sync tip helps, but the trade‑off here was about 7% faster battery burn — worth it while you’re at “38% adoption.” What adv interval and SDK build are you on, and are you mixing Wallet keys with app login or one path only?
We saw the same on iOS 17.6 — setting RT “TX power: High” in LENS and pulling any battery packs under about 2.9V cleaned up the flaky RSSI; handshakes would “timeout” right at the latch, . It does cost a bit of battery life, but reissues fell from about 22/night to about 9 without touching the SDK. Did you check TX power and battery telemetry on those two floors?