bluetooth scan gun, and an iPhone...

you can always block them

The easiest way to block someone is using their contact. Open the contact info of who you want to block and then scroll to the bottom of the screen.

You will find a button to block them. Pressing this button will prevent the person from being able to call you, send you text messages, or reach you over FaceTime.

They don't have to be in your contacts to block them. If they’ve recently contacted you.

Access a person’s contact through the lowercase ‘i’ in a circle icon.

Look for the block option at the bottom of the page.

Remember, the person will know that you've blocked them.

They will hear a few rings interrupted by a busy signal.

If it's a text, it will look like it was delivered. If you’re sending an iMessage it will show delivered like normal, but won't show or alert you.

If someone you’ve blocked tries to FaceTime you, they’ll see the normal connection, but you will never receive anything and it rings on their end forever.