How to make backdoor or hidden superuser on joomla?

Question

Joomla

Hello. The situation is this: I'm making a site on Joomla, without access to hosting. And I would need a backdoor or a hidden user if the customer suddenly decided to scam me. Are there other types of insurance?

Answer 1

FairPlay service, prepayment (full or staged), contract.

Answer 2

You can obfuscate the code
From ordinary customers it will help
And there already shove whatever you want

Answer 3

It is easier to restrict the user's rights for the customer to manage the site until full payment is received. It is better to have at the same time some kind of contract that you undertake to do for the customer, and he will pay you for it.