Check out this interesting retro gadget for sale on Gumtree. Must admit had to look it up first to see what it does. Now very tempted to ditch my cellphone. 
Rigil
But are you still going to get junk mail? They are persistent…
Keep it in case you want to talk to someone at night.
;D Actually wouldn’t mind hearing seeing a telemarketers spiel in Morse! Apparently, a special pair of Polaroid lenses tuned to filter out baloney angled light waves is a popular accessory with this mode of communication.
Rigil