Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
hi,
this may tell u some explanation about ur question,
**broken link removed**
https://www.teasystems.com/Publications/PW/BossungFocus_6152_109.pdf
https://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=900275