As a former Homeland Security supervisor I can attest to the ease and accuracy of this system.
We have a large flow of visitors/guests & employees who forget badges, everyday and Proxyclick makes it easy for me to see who's here, who's due, for how long the stay is, etc. The employees who have appointments coming can add them or they email me and I can add them to the system. It take just seconds. You can add an individual or a group, (that's really handy). This also makes it easy to know what visitors I have on property in case of an emergency.
Ours is attached to a Dymo label writer that prints our visitor badges with time sensitive stickers. I can also give access badges to employees that forget theirs and just put the info in the system without having to print a visitor badge.
This system gives me the freedom to just look to see how many I have in the building with a glance. Tells me if someone has added a visitor that may be a last minute add. It will email the visitor a reminder of the appointment, auto emails the employee when the visitor checks in, as a section for notes with the visitors name for any "special" instructions.
I can go on and on with praise but will only add this, Customer Service is OUTSTANDING! I have a constant connection with them. I've never waited more than 3 minutes for a response via they "live chat" on the system page itself. These folks are true professionals. They will listen to your suggestions, (one of mine was put into use) and do all they can for you. I always feel like a valued customer with them.