QR or Bar Code access control

We have a need to send guest passes out so people can print them or show them on their phone and the reader would grant or deny access. We currently have access control using HID Edge and VertX and RFID tags, so this would supplement this. Also, we have Doorking phone entry dialers if it can integrate with that and we have cameras at those points recording on Milestone XProtect, so maybe that can read codes, send an alarm out to the entry system to trigger the gate to open.

Any ideas?

HID has new NRC capable readers that work from a smart phone. Might help depending on what your trying to accomplish. Can you give more details?

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We have HID access control for all our access points as well as guest entry dialers at our two main gates. We want to be able to allow a homeowner to print a guest pass that would allow them in the community say for a specified period of time, anywhere from a few hours to a few weeks. This would allow us to get rid of guest codes which are shared too easily. We have Hik 6412 cameras inside the entry dialers, so it may be possible to read a bar code or QR code using the camera.

My first thought was easy lobby but that's probably to complex for this situation.

http://www.hidglobal.com/visitor-management

Looks interesting but that requires distributing RFID tags to each visitor, in our case mailing them an RFID tag takes time and money. Being able to go online, print a badge with a bar or qr code would be way easier all the way around and not cost us anything (once equipment is setup).