
"Motorola was recently granted a patent for a way of making a handset release scents by heating a special cartridge. It was inspired by the way plug-in air fresheners work." See the patent. Also read about smelltones.
-- New Scientist
Earlier:
A Bottle of New Car Scent
Smelly Packaging Encourages Impulse Purchase
Marketers Should Create Multisensory Campaigns
Smelly Postage Stamps
Hasbro Bottles Play-Doh Fragrance
Smelltone Ringtone
Movie Screening to Be Enhanced With Scents
WSJ to Offer Smelly Ads
Flashback: Perfumed Ink for Smelly Ads