Check in with an existing Honeywell or USB QR scanner

As a coach, I want to be able to use an existing QR scanner on a front desk computer to allow members to check into FITsociety, for example with a supported Honeywell model. When scanning, I want to be able to verify whether the member has a valid subscription and register the visit in the attendance history. This must also be usable without purchasing a new door access system.