A lot of people may be interested in a simple way of keeping a diary of events in their day- whom they met, they talked to, where they went, how they felt. Some of this information can be extracted automatically from their location traces on their phones and from their activity on social web sites. You will build an app that will automatically track and record some of these personal information and present it to the user in the form of a browsable diary. You will be able to build upon/make use of exisiting code from previous projects.