Many people have a variety of different gadgets that they use to watch movies.  Until now, they had to buy multiple copies of the same movie if that wanted to watch it on different gadgets.  Now a new service called UltraViolet promises to save these people money and make their lives easier.  This cloud-based service acts as a kind of digital locker, keeping track of movie purchases and allowing them to download copies onto smartphones, laptops and other devices.

Several years of negotiations between Hollywood studios, gadget makers and retailers were required before UltraViolet could get off the ground.  There are currently a limited set of support gadgets and movies available, but the movie library is expected to grow over the next few months.  Read more details about UltraViolet in this Wall Street Journal article or visit the official UltraViolet website.