Technicial Specification:

Introduction

This QR code + IC card access control machine is
used in conjunction with our "QROPEN" WeChat applet, using dynamic QR
code as the user's identity certificate (also supports IC card), and the
dynamic QR code used by the owner has a time-limited validity period.
There is no need to worry about it being copied or stolen, so the
security level is high! When a guest visits, the owner can also use the
applet to generate a time-limited, chance-limited QR code screenshot to
send to the guest's mobile phone, and the guest can use it to open the
door. Those who have not received the QR code can also ask the front
desk/security guard to use the "QROPEN" PC version or applet which are
connected to the small ticket printer to print out the QR code temporary
ticket for them to open the door, which effectively solves the visiting
problem!

The access control machine runs completely offline, does
not connect to the network, does not require WIFI or SIM card, etc...
It adopts the traditional integrated access control management mode, and
the parent card (added card) and delete card to manage the user's QR
code/IC card permissions. WeChat applet is also extremely simple, which
requires no user registration, no user personal information, only to
follow it on WeChat.

This product can also read QR code, mobile
phone NFC, IC card, second-generation ID card, bank card with chips,
etc., the user does not need to bring the card, only the mobile phone.
It can support 20,000 users at maximum.

Application:

1. The
   owner does not need to bring a card/key when going out. Just bring the
   mobile phone. When entering the door, display a 10-minute valid QR code
   by simply tapping the WeChat applet, and then put the phone screen near
   the reading head. The door will open afterwards.

2. Honorable
   guests are already at the door, but the owner is not at home / company,
   just click on the WeChat applet (generate a valid QR code for ten
   minutes by default) and then send the screenshot to the guests’ mobile
   phones (by WeChat / QQ / MMS, etc.). It can be used to open the door,
   and is only valid for ten minutes which is very safe.

3. When
   a guest agrees to come over soon, the user only needs to use the applet
   to set a 8-hour,1-time valid QR code, and then send the screenshot of
   it to the mobile phone of the guest. Within the set time, it can open
   the door once. If the guest used it once in the valid period, it will
   turn to invalid one.

4. Owners who do not have a smartphone
   can still use the IC card to open the door. When they have a guest
   visit, they can register at the gate security and generate a temporary
   QR code from the phone of the security. The photo of that QR code can be
   used to open the door within the setting time. (You can also print it
   out for the guest with a small ticket printer)

5.