Don't visit if you feel like you need any precautions.

This sounds overcautious. If you have serious doubts about the person, don't go. Otherwise unless there are special circumstances, don't worry.

Maybe you can describe the situation a little better. Where do know the person from? How well? Is there a potential romantic thing going on? All that sort of stuff. It wouldn't occur to me to do the stuff with an airtag and remote contact, but it might be different for me since I'm a cantankerous dude.

What the fuck are you talking about Jesse?

Bear mace disguised as body spray. Stun gun in bag. Boot knife. Pistol in glovebox for safe measure.

As soon as you step in you say "Hi! Would you like some gum?" and immediately start digging in your bag. This will confuse them as they ponder "who offers gum anymore?"

Rattle off the contents absently, lighter, lipstick, body spray... And then pull out the 'body spray' like you're just getting it out of your way.

Quick as a flash, take a deep breath and hose 'em with that shit. You want the face but start at the top of the chest and sweep up just in case they're paranoid and duck or jerk their head to the side.

Do not hesitate, don't wait to see how effective it is because that mace cloud will be everywhere including you. Hit them with the stun gun. A couple of times.

Don't take too long on the next part because they might have backup further in the house. Get their wallet and, the most important part, their keys.

Dip quick but don't run when you're outside, just play it cool.

You'll probably have at least a day or two before they change the locks. That's your chance.

If you're that nervous, maybe just meet in public places until you get to know them better? Trust your gut.

Why would you go to someone's house if you're that scared of them? It would also help people answer you better if you included any relevant information at all about your relationship with the person and how you know them

I think those are sufficient precautions. Should definitely get the guy caught in case he murders you.

Meet in public, make sure you have friends in the area who have your itinerary - someone in another country can do fuck-all to help you in an emergency aside from trying to call your local authorities who may or may not give a shit, consider carrying some self defense options you are capable of effectively wielding and lawfully able to (do not ever carry a weapon you aren't perfectly comfortable with using both physically and morally or it will likely just be used against you), always have multiple escape/emergency plans, and above all: listen to your gut! If something feels off, get the fuck out!

Depends on your situation and context. For myself I feel sharing the address with a friend is plenty. Maybe ask them to call you later.

Make sure to have a final goodbye letter written and left in a safe place visble to close relatives you trust so they have something to show about your life on those true crime youtube videos.

/j

First you find another friend preferably in the same country. Then you go visit this friend instead.

This post seems to imply the normal way to meet someone is to meet them online in a sketchy way which leads you to have no trust. I mean, I can understand some trepidation but as others said just meet in public and try to get a handle on the situation.