Gym door access control with Chronix Hub

Because the answer is computed from the member's live membership at the moment of the tap, there is nothing to sync. Freeze a membership, let it expire, cancel it or revoke a lost card, and the next attempt is refused.

The answer is written to the Live Log before it is sent back, so every attempt is on record, including unknown cards. A typical answer takes a few hundredths of a second in production.

What Chronix Hub checks on every attempt

In this order:

1. Is the device key valid, and is it this device's own key?
2. Is the device's IP address allowed (if you set an allowlist)?
3. Has this device gone over its per-minute rate limit (default 60)?
4. Is the device switched on, and is the door switched on?
5. Does the card, code or face belong to a member?
6. Does that member have an active membership whose plan includes gate access?
7. Are both the door's schedule and the plan's schedule open right now, in the studio's timezone?
8. Did the same member come through this door within the anti-passback window?
9. If you turned it on: do they owe more than the unpaid balance limit?

QR and PIN options are hidden in the portal when the studio has no active door device, and when a parent is acting for a dependent.

1. 1

   Create opening hours (optional)

   Schedules tab: weekly windows in the studio's timezone, for example Mon-Fri 06:00-22:00. A window that ends before it starts runs past midnight. No windows means never open.

2. 2

   Create the door

   Doors tab: name it, pick a schedule (none means always open) and set its anti-passback time. The default is 60 seconds and 0 turns it off.

3. 3

   Add the device

   Devices tab, Add device: name it, choose the vendor, pick the door. Optionally set an IP allowlist (the gym's public IP), a higher rate limit for a busy turnstile bank, and fail open if the door must open during an internet outage.

4. 4

   Copy the key and device ID

   The device key is shown once. Paste it into the device or bridge now. Lost it? Regenerate key, and the old one stops working immediately. A web kiosk shows a one-time setup link instead, which you open on the tablet.

5. 5

   Let the plan open the gate

   Memberships, edit the plan, turn on Grant gate access and optionally pick a schedule. Tick Apply to current members to push it to people already on the plan; otherwise only new sales get it.

6. 6

   Add credentials

   Members, the member, Door access, Add credential: a card number or a face mapping. QR passes and one-time PINs need nothing from you; members get them from the portal.

7. 7

   Test it

   Tap a member's card. Within a few seconds the attempt appears in the Live Log with its reason. Nothing in the log usually means the device never reached Chronix Hub: check the key, device ID, IP allowlist and internet.

Product names belong to their owners. Chronix Hub is not a certified or official partner of any hardware maker and does not sell hardware.

The golden rule: only granted: true opens the door. Any error means no. Fail open only applies when the device cannot reach Chronix Hub at all; Chronix Hub itself never says yes because of an error.