Send an estimate; the owner opens it on their phone, in the sun, and approves. They see their vehicles, their service history, and their invoices. One passkey account carries them across every app, with no second login.
The typed name on an approval is a signature for the record — but the authority comes from the account, not the string. Approvals are real, and they're logged.
Bright sun in a Portmore parking lot, a phone with one bar — the estimate still opens and approves.
The same passkey signs a customer into the portal and a staffer into the shop. No passwords to forget or reset.
Vehicles, service history, estimates and invoices — the customer sees what you see about their own cars.