Pin pads or keypads for doors are either connected to a central access control system, standalone pin pads, keypads on door locks or deadbolts or IP connected pin pads. Sometimes for the purpose of time and attendance they are paired up with biometrics since PIN codes can be passed on. That's by the way a big reason Kisi currently does not offer PIN codes.
Keypad on door locks
Keypads on door locks might be most familiar from restroom type of scenarios where Starbucks doesn't want you to use the restroom without you buying a drink. In return they print the PIN code for the bathroom on the payment receipt. If you are a regular you know the code, since it typically hardly ever changes. That's exactly the problem with PIN codes - if you change the PIN, no one gets in anymore.
Kisi's opinion: Standalone door lock pin pads are an entry level choice for a single, uncontrollable point of entry to convert that to a locked door in a fast and efficient way.
Standalone PIN pads
Standalone PIN pads typically come as flush mount, single-gang design which is easy for installation into drywall, or single-gang electrical boxes. They typically can support different types of PINs and between 1 and 6 digit codes. If the master code is entered, codes can be changed. That's a big vulnerability. A popular higher end Pin Pad version would be 212iLM by Nortek Controls.
Kisi's opinion: PIN pads can be a great addition to electric access systems for the purpose of backup in case something goes wrong. That way no one needs to know the PIN code.
Wiring an Electromagnetic Lock (Maglock)
Basic Access Control Using an Electric Door Strike
PIN / Prox readers
HID provides combined PIN and prox readers meaning those devices can read proximity cards as well as PIN codes. According to the manufacturer, the HID Global's iClass SE platform supports a full range of legacy, current and future technologies - in other words, has all the vulnerabilties built in.
Kisi's opinion: If you don't have to use PIN codes, stick with secure proximity cards.
Time & Attendance PIN pads
Many blue collar work jobs and industrial environments use PIN pads for the purpose of time and attendance tracking. This use-case makes it especially vulnerable to passing on the PIN code to coworkers who "badge in" for you.
Kisi's opinion: For those scenarios, most likely a biometric solution would make more sense.
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