If you have an Apple or an Android phone—and you probably do—you have the option of locking your phone using a PIN code. With most of these phones, you can choose a four-digit PIN or a six-digit PIN.

If your smart lock is connected to a voice assistant, be sure to use a PIN to unlock it with voice commands. It's a stretch, but it is possible to create workarounds with IFTTT to avoid using the PIN.

A tweet from billionaire Elon Musk – “Use Signal,” was all it took to make the whole world take a decision. Elon’s tweet came after WhatsApp had publicized the changes to its privacy policy after the ...