As far as i am aware if you connect your action cam to your pc via usb you can check the wifi ssid password by doing the following.
Sony action cam wifi password lost.
The ssid and password for the wi fi connection are printed on a sticker on the action cam operating guide or on the battery cover.
In computer click on the action cam.
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Connect the camera and a computer with the micro usb cable supplied then select computer pmhome wifi inf txt of info.
Start click on computer.
Followed by info then wifi in.
Go to page top.
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Havent used it in a while so i lost the manual with the password on it.
Created aug 11 2015.
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Posted by 2 hours ago.
The ssid and password are also displayed.
The ssid and password are printed on the inside of the camera s battery cover or on the cover of the manual.
I forgot or lost my home network wireless security key or password.
If the sticker is lost or is difficult to read connect the camera to a computer and then follow the steps according to the computer operating system to locate the wifi inf txt file.
This will show you how to recover wifi password on sony action camera hdr as20.