The eLog library was initially developed as a research prototype and later published for lifelogging researchers in 2010 to help them easily analyze heterogenous data and complex visualization. It has been kept growing with the progress of mobile computing environments and recently its UI part is released with GPL v3 license for wider usage. The eLog UI library is optimized for mobile environment and can get easily integrated with existing Web services.

Who We Are

The original work was proposed by Pil Ho and later extended the work with collaboration with 28 researchers around the world who contributed their lifelogs, collaborated for lifelog analysis and share research results to build up an open lifelogging platform for the public. Pil Ho has been keeping the development updating the library following up the progress in mobile computing.


  • Nov. 2014: Change the web page skin using bootstrap.
  • Nov. 2014: Published elog UI library as GPL v3.
  • Oct. 2014: Version up eLog library and documentation.


eLog iOS Skeleton



iOS developer profile provisioning

If an existing profile and its any related certificates are expired, then look at https://developer.apple.com/library/ios/#documentation/IDEs/Conceptual/AppDistributionGuide/Troubleshooting/Troubleshooting.html#//apple_ref/doc/uid/TP40012582-CH5-SW1 first. If this still does not help and you want to restart from the clean (i.e. you did not publish any Apps before), then simply clean certificates from your Keychain (named iOS blah) and next visit https://developer.apple.com/account/ios/profile and clean everything (certificates and profiles, not identifieris and devices) and recreate provisioning profiles from the web page (not from Xcode). It will ask you to upload the development certificate from your Mac (which you can generate following instruactions at http://developer.apple.com/library/ios/#documentation/ToolsLanguages/Conceptual/YourFirstAppStoreSubmission/ProvisionYourDevicesforDevelopment/ProvisionYourDevicesforDevelopment.html). Follow the instruction to download certificates and profiles. At the end restart Xcode and also refresh from the Organizer.