How to restrict Wi-Fi connection for geographically remote clients?

Question

Computer networks

Are there any Wi-Fi routers that can block the client connection:
if the client is more than n away;
or if the signal level to the client is below n?
For example: 1) the mobile device is more than 3 meters, then prohibit the connection, 2) the signal level is less than 65dBm, then prohibit the connection.

Answer 1

If you have a room, then something like this: habrahabr.ru/post/143595

Answer 2

Signal levels - yes. Response time (indirectly - distance) - yes. But all this with low accuracy. For example, within a room \ two it will work, behind a thick wall (bearing) - it will be possible to block it, but, for example, within an open space - nothing will come of it.

Answer 3

Put all operators in a faraday cage, it will be something like this, but they will not "spend" free megabytes

Answer 4

I have already answered a similar question for you.
Put another router next to the operator with the same SSID, but with a weaker signal (rolled antenna?) And the Internet is turned off. Then the devices of employees will cling to the nearest router without the Internet.

Answer 5

Option 1. Install a router with openwrt to track logs, block frequently encountered macs or redirect to your page.
Option 2. In accordance with Government Decree No. 758 of July 31, 2014, install a router with openwrt and implement authentication by phone on it (phone entry - SMS authorization). Add frequently encountered numbers to the black list.
According to option 2, I have been testing for 2 months at 3 sites + a bonus list of visitor numbers for mailing. Access in a particular case is active for an hour, then re-authorization.

Answer 6

parse the list of devices through airmon-ng and throw out the "weak" ones. but the client will still try to connect later if it does not find a stronger signal