Ben Sayer at Genealogy Tools put together a brief overview, complete with screenshots, of the iPhone FamilySearch Index app that was just released at RootsTech 2012.
It’s an application (available on iPad and Google Android as well) that allows you to help with indexing genealogical and historical records – you read snippets from images and type in/index what you read – names, etc. and the the information is submitted to the FamilySearch index, where it’s compared with the results of others who viewed the same snippet. If there is a consensus, that information is added to the index.
Review: Genealogy Tools