I've made very good money doing unlocks, most wrecker services provide this service.
Getting a AAA membership is money well spent , for those who are less than self reliant. They provide unlocks ,tire changes, gas delivery, and towing.
Here is trick that may get you out of a bad situation. Cut a section of plastic from a milk jug, anti freeze jug, oil container ... About 6 inches by at least 4 inches. Fold it in half, force it down past the door weather strip it should go fairly easy. Now work it to a position as close to the manual or electric door lock controls as possible Now take the antennae from the vehicle , a heavy piece of wire, small diameter rod ... and slide between the 2 layers of plastic and activate the door lock controls. The plastic reduces fiction so you have more control and also keeps you from damaging the weather strip. Manual door locks may require that you put a right angle bend in the end of the tool.
If you can't get in this way and you are desperate and if you are driving an extended cab pickup remember that the small glass behind the door cost almost twice what the door glass cost.
For you guys who use slim jims, many late model vehicles have side curtain airbags the sensor for these is in the door it is not advisable for the untrained to insert any thing inside the door on these vehicles. Airbags can cost well over a grand a piece.
Pat