You might be interested in this app to try it for yourself: https://github.com/nisargnp/DeadReckoning https://github.com/nisargnp/DeadReckoning I read a paper

You might be interested in this app to try it for yourself: https://github.com/nisargnp/DeadReckoning https://github.com/nisargnp/DeadReckoning I read a paper some time ago which suggested that mobile devices are still nowhere near good enough to use this e.g. for navigation around a shopping mall.