I spoke to him and he was offended, then mad, then said he had the right to have access and I couldn't take that away.
He accused me of being irrational ("crazy"). Then he calmed down but said he didn't have the passwords. I said these
accounts had to be removed, so he said he'd look for them.
I asked him to delete 3 accounts.
1) There was an "888888" admin account. He said this is a 'super account' that only the mfg has the password.
Then he admitted he had access too but needs it if something goes wrong. I complained that he had
it set to have camera and playback permissions and this was not acceptable. He maintains he cannot remove this.
I read there is a complicated algorithm like the date times the 8888 for the password. Nothing worked so far. I think
this is the one he also said can only be changed by going to the DVR, plugging in a mouse, keyboard and monitor and
changing the password there.
2) There was also a "default' account that he said did not have a password and has no camera access.
3) There was finally another "admin 888" account and I think I managed to change that password.
I still believe he has access to my cameras.