Verified answer

If it is a good LPO, then you don't.

If it is a bad LPO, well, I am not about to help tip off someone on how to try to get away with committing theft.

You can't, that's the whole point of being a loss provention officer... just looking like you're a happy wallmart shopper blending right in to the scenery.

Once they bust something, they have ID they can show to identify themselves. Mind you the person who's chasing after you could just be a store clerk, or a concerned citizen... all without ID yet all with the power to make a [citizen's] arrest and hold the person til the cops get there - all totally legally.

[but they're totally buggered if it's just some misunderstanding and they tackled some other happy wallmart shopper in the parking lot]

Start stuffing stuff in your pockets and look around for whoever is following you and trying to look like they aren't paying attention.