Force your clients to get a hardware wallet and then give you the public address. It is easy for you to deposit the funds and track it on explorer, while they hold the keys and the physical wallet
Whilst I appreciate you taking the time to reply, you haven't actually read my original post or subsequent posts. For the umpteenth time a hardware wallet is NOT a good enough solution.
I can't understand why you refuse to use hardware crypto wallets for your own or clients' safety. Maybe,you have no idea how safe is to use this wallets or your imagination about hardware wallets is limited. Just give it a try and you will not regret it.