[erbbysam]

When I was a kid my parents installed a program called "cybersitter" which monitored my activities online and only let me on select sites at chosen hours selected by my parents... so I wrote a guide on how to completely eradicate cybersitter from one's computer without having access to it...

I would recommend what kerowo said because if they are somewhat computer literate they will probably figure out what you are up to especially if you ever call them out on something that they do/type. There are a lot of "parental monitoring" software packages out there like cybersitter which would be alot better than installing a random keylogger.