The key handler

Access that follows the booking.

The door code is created, scoped and expired by the reservation itself. Nobody types a code into a lock app, and nobody has to remember to remove it afterward.

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From the booking to the door

The door code is created, scoped and expired by the reservation itself. Nobody types a code into a lock app, and nobody has to remember to remove it afterward. Scroll to follow one stay: how your locks connect, how the code is made, how it keeps up with changes, how a paid upgrade reaches the door, and who is allowed to see it.

Step 1 of 5 · Connect

It works with the lock you already own

Everything runs through Seam, so one integration covers most major smart lock brands. You sign into your existing lock account and your devices appear. Then locks get attached to rooms, and a unit with a building entrance and its own door can share one code across both.

What's on screen

Signing into your existing lock account
Your devices appearing on their own
Two doors sharing one code

Under the hood

Onboarding is a hosted connect flow. No hub to buy, no firmware to flash and no per-door configuration.

Step 2 of 5 · Mint

The reservation creates the code, nobody types it

When a reservation arrives from your PMS, the code is created automatically and named after the guest and confirmation number, so you can tell whose it is on the lock. It runs from this room's real check-in to its checkout, with a 15 minute grace on each end that you can change.

What's on screen

A reservation arriving from your PMS
The last four digits of the guest's phone
A window matched to the room's own hours

Under the hood

By default the code is the last four digits of the guest's own phone number, so guests rarely have to look it up. You can switch to random codes, and choose four or six digits.

Step 3 of 5 · Keep up

When the booking changes, the code changes with it

Dates shift and the window recalculates. A cancelled booking is revoked from the lock straight away, and a reinstated one gets a new code. If the room changes, the code moves with it. A guest arriving late on check-in day gets a code that starts in five minutes.

What's on screen

Dates moving and the window following
Cancelled means revoked, reinstated means new
A room change and a late arrival

Under the hood

Codes are set up to work on locks that are temporarily offline, so a flaky Wi-Fi connection does not become a lockout.

Step 4 of 5 · Upgrade

A paid upgrade moves the door, but only once you approve it

When a guest buys early check-in and you approve it, the code starts earlier, for exactly the hours they paid for. An authorization on its own never moves the door. Only a payment you have confirmed and captured does.

What's on screen

A held payment, with the door untouched
A note that authorization alone changes nothing
Approval, capture and the new start time

Under the hood

The thing the guest bought is the thing that happens, with no action from you beyond tapping approve.

Step 5 of 5 · Gated

Having a code is not the same as being shown it

The code exists from the moment the booking arrives. Three separate gates decide who gets to see it: the guest app, the assistant, and what the assistant is allowed to learn.

What's on screen

The guest app waiting on your required steps
The assistant sharing it only around the stay
Door codes kept out of what it learns

Under the hood

The guest app holds back stay details until the steps you require are done: ID, deposit, documents. Door codes are kept out of the knowledge index, so one can never be baked into a saved answer. The assistant reads it fresh each time or does not answer.

Step 1 of 5 · Connect

It works with the lock you already own

What's on screen

Signing into your existing lock account
Your devices appearing on their own
Two doors sharing one code

Under the hood

Onboarding is a hosted connect flow. No hub to buy, no firmware to flash and no per-door configuration.

What it handles

Each of these used to be a task on someone's list. Here's what runs it now.

A code per booking
Access
Created when the reservation arrives, named for the guest.
Codes that outlive the stay
Access
Scoped to the room's real check-in and checkout, with a grace you can tune.
Dates changed, code stale
Access
The window recalculates, and a cancelled booking is revoked at once.
Upgrades the door ignores
Access
Approve a paid early check-in and the code starts earlier, for the hours bought.
Keys for everyone else
Access
Permanent codes for cleaners and maintenance, plus lock and unlock from your dashboard.
A dead lock, discovered late
Access
Offline and low-battery locks trigger an email alert naming the lock.

Under the hood

How it actually works

1
It works with the locks you already own
Everything runs through Seam, so one integration covers most major smart lock brands. You sign into your existing lock account and your devices appear. No hub to buy, no firmware to flash.
2
The code comes from the stay
When a reservation lands from your PMS, the code is created automatically and valid only for that room's check-in to checkout. By default it is the last four digits of the guest's phone number, so guests rarely need to look it up.
3
It keeps up without you
Dates shift and the window recalculates. A cancelled booking is revoked from the lock, and a reinstated one gets a new code. A paid early check-in, once you approve it, moves the start time.
4
Access is gated, not just delivered
Guests cannot see their code in the app until your required steps are done. The assistant shares it only around the stay, and door codes are kept out of everything it learns.

Connects to

Works with what you run

Your existing tools stay where they are. Linkbase connects to them instead of asking you to move.

See every integration →

Seam
Your smart locks
Guest portal

The jobs next to this one

Upsells & revenueOffers made in conversation, paid through StripeRead more→Oversight & controlHeld replies, handoff, and a recordRead more→

See it on a real conversation

The live demo runs the same AI on a sample booking. Ask it what your guests ask you.

Try the AI Book a walkthrough

Access that follows the booking.

From the booking to the door

It works with the lock you already own

What it handles

A code per booking

Codes that outlive the stay

Dates changed, code stale

Upgrades the door ignores

Keys for everyone else

A dead lock, discovered late

How it actually works

It works with the locks you already own

The code comes from the stay

It keeps up without you

Access is gated, not just delivered

Works with what you run

The jobs next to this one

See it on a real conversation