My (32m) husband has started lying about his whereabouts. What next?

Husband and I have been married for 3 years. My husband travels a lot for work, so we use an app to communicate about our movements. If I leave for work I move my marker, when I lunch, I move it, when I walk the dog, here I move it, etc. <br><br>Recently my husband has started lying. I set the marker to my location when I go out and if I detour or divert for any reason, I move it. My husband now regularly puts in random places for his markers if he is going somewhere.<br><br>I’m not sure what his lies are supposed to achieve but he has told me he is going to the store, but moved his marker to the park. If I go to the park, he will move it to a friends house. Whhis lying isn’t to cover up an affair, but just fabricating lies. <br><br>Sometimes he will make them up and then lie about what he was doing that day. Even listing the order he did things in. When I call him out, he gets mad at me for accusing them of lying. <br><br>He has admitted he is just mean and cruel, but this is not cruelty, it’s lying to my face. How can I improve our communication to stop this?<br><br>TL;DR My husband lied about his whereabouts, even though we use app for communication. I want to improve our communication to stop these lies.