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.


pilhokim's blog

Want to build your own lifelogs? We support sensors and services.

If you are interested in building up your own lifelog with our eLifeLog services, apply now. We will now accepting applications in on-going basis. Check the availability on the below calendar. Be aware that we have a number of sensors and some other types of sensors might be available.

eLifeLog APIs in MySQL stored procedures are now available.

eLifeLog APIs are now also available as MySQL stored procedures. Check out your database and you will see newly introduced stored procedures there. It's input and out could be slightly different since it does not need JSON format changes and/or web processing. Now you can directly manipulate results from a structured query that enables you to purely work with the database using SQL.

Check out https://www.elifelog.org/book/elifelog-api and report us any problems or suggestions :)


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