Using someone's Wi-Fi without informing them
Q: Can I use someone's open Wi-Fi without informing them?
password
Putting a password on one's phone
Q: In the event a man has two wives and not wanting them to have jealousy and fights, he puts a code on his phone not allowing his wives to access his cell phone to see his calls, messages or photos. Would this be acceptable Islamicly even though the wife insists on looking into the phone and becoming angry for days on end?
Spouses maintaining total transparency
Q: Can the husband and wife hide the passwords of their social network chats from each other? Does the husband have the right to know with whom his wife is chatting and vice versa?