Yes, POSB Internet Banking is safe. They will provide you with an online account name and password. These will help to keep your account safe and secure. They also offer extra security tips that may help you keep your account secure.
well email archiving is to keep you email safe and secure you can keep you email in a secure place for later read it and fase it and if you ready to deleted well is you choice to keep it or erase it email archiving is to organized and know you email information to keep it
It depends on the system. If you can take out the batteries and manipulate them to open the door then no it's not going to be secure. It is one of the more secure ways to keep your home safe though. Make sure you read customer reviews to find one that is going to be dependable.