In Jessica Jones (Netflix), Jessica states that Kilgrave's influence on someone doesn't last more than 10-12 hours, after which he needs to "renew" it (Season 1, Ep. 4, when talking about Easterns).
Yet, we discover in Ep. 5 that the "spy" taking pictures of Jessica for Kilgrave meets with him every day, at 10:00 am sharp. That's 24 hours: how does Kilgrave maintain the influence on his spy?