Welcome to FT.

For secruity, you remove it from the bag and they will scan it by itself, no hassles at all. Have it out when you get to the line so you don't have to hold up the people behind you, and just put it in the bin and slide it through.

There are many common schemes out there where people grab your laptop while you are delayed by their friend holding up the security line, they are still popular, so don't let it go into the machine unless you are sure you can get through the line, else it may be gone before you even know it's gone.

I had a chance to grab two this weekend on a flight, it totally amazed me people would leave them that far from their eye sight.