This will come in very handy. You know why. Fingerprints. Not just fingerprints, but little bits of food you spit out occasionally during the course of a mammoth in-bed laptop browsing session. It’s OK, everyone sprays a few droplets of gob on their screens a couple of times a day. There’s nothing wrong with your mouth.

Sailing to the rescue of smudged displays is LG.Phillips, which must be…