Do You Cover Your Webcam Lens With a Sticky Note?

There is a certain practice, born, perhaps, of obsolete data and just plain paranoia. People place a sticky note over their Mac’s webcam when not in use. Is this a valid, efficacious practice? There are even commercial products that have a nicer look to them. John Gruber digs into the practice and the technology both old and new. There’s a lot to learn in this column by John. Check it out.