Gadgets, gizmos, and tools to help make you more productive in business

Google is having a patent approved that allows "contextual advertising" to be placed onto billboards. The signages are linked to a store's inventory and as shoppers buy, the ad changes to display the remaining quantity. Once a product runs out, the ad quickly changes to another item on the store.

An interesting development on physical world advertising? 

[via Engadget]