Is it possible to restore access to the wifi hotspot. If previously had access to it?

Question

WiFi

Is it possible to restore access to the wifi hotspot. If previously had access to it?
Let 's say this is possible:
I had access to a wi-fi point, that is, I knew the password and went online.
Is it possible to access it again if I changed the wi-fi password on the modem? But I used to be connected to it.
Is it possible to get the password from the admin panel?

Answer 1

If you forgot your password, you can always reset your access point to factory settings and set a new password. This is the simplest. In addition, in most cases, you can get to her admin panel by connecting to the network with a cable ... and, again, changing the password.
Someone else's point (to which there is no physical access), respectively, can be hacked ... but it is quite difficult, illegal, and then no one will "teach" this for sure :)
In any case, the fact that access was "before" by itself won't help.

Answer 2

I knew the password and went online.

Except how to find out a new password (from the owner of WiFi or by selection) and reconnect - no way.