About this scene
She walks up to the parked car and asks something through the driver window. Standard pretext. Her left hand stays on the door frame. Her right hand drops down past the open window and into the cabin without breaking eye contact. She finds what she came for. The grip is firm. She does not pull her hand back for the next minute and a half. The conversation continues like nothing is happening below the window line. She is chubby, mid-thirties, easy smile.
What to watch for
The disconnect between her face and her hand is the trick. She maintains a normal-conversation expression for the entire ninety seconds. Her hand is doing something completely different. About forty seconds in she switches grip. Around the minute mark she starts using her thumb. He's the one who breaks first, and you can see it on his face before she registers it. She keeps the grip until the very end, then withdraws her hand and walks off.