As Alucard says you can password protect the IPTV Stalker Video Addon in the addon settings in the 'Parental' tab & choosing 'Enable' & setting a password. This will result in that password being required to access the Adult Channels in the IPTV Stalker Video Addon, but the problem is that all anyone has to do is disable parental in the addon settings which is easy to do & disabling doesn't require a password, which is a bit counter productive. You can password protect access to addon settings (instructions are included in the video I link to below), so there are a number of choices.
If using the built-in Kodi Live TV feature in conjunction with PVR Stalker Client you can actually hide & lock channels through Parental Control in TV settings & Parental Lock in Channel Manager, & they end up being hidden from the guide & channel list.
1) Click/choose the main System Tab, go down to Parental Control, choose Enable & then enter a PIN.
2) Go back up to General, then Channel Manager & highlight the channel you want to lock. Go over to Parental Locked & then enable. Then Apply Changes Now. Do this for all the channels you want hidden & locked, then Apply Changes & OK.
Doing the above two steps both locks & hides the channels. A PIN is then required to disable Parental Control & to unlock the channels.
The best thing to do is to set up a completely separate profile for minors & to password lock the master profile IMO.
Watch this video for instructions on how to do that:
Code:
https://www.youtube.com/watch?v=l-hvdcFJET8