The signal. Mid-conversation, the buyer's torso angles 5–15° toward the camera or you. Shoulders drop, head tilts slightly, blink rate slows. Their body just voted "yes" before their mouth caught up.
What it really means. They've moved from evaluating you to imagining ownership. The internal monologue shifted from "should I?" to "how would this work?". This is the most reliable nonverbal close cue on Zoom and at the kitchen table.
The exact play. Stop adding features. Drop your voice half a step. Trial close: "Sounds like the install timing is the only piece left — want me to lock the Tuesday slot before someone else grabs it?"
The mistake. Most reps see the lean-in and keep selling. You just buried the close under three more bullet points. The lean-in is permission — use it inside 20 seconds or it fades.