So I'm looking for a way for my tablet to automatically enable or disable PIN unlocking based on which wifi network I'm on. I don't need the PIN at home or at my parents' house, but would want it for work and my in-law's house (I don't trust my sister-in-law not to go through my stuff). Is there an easy way of accomplishing this, perhaps with Tasker or some similar app? I haven't purchased Tasker yet, but would if I could control this functionality.