We recommend a computer, Surface tablet or an iPad to do the initial application process.(I-9 completion cannot be done on any mobile device as the I-9 program will not accept the electronic signature on a mobile device.)
Once you see your application has been accepted, they will prompt you to log back in to complete page 1 of your I-9. When you show up for your first shift, you will need to produce proper and valid documents in order to complete the I-9 and fill out your W2 and direct deposit form. This will cut down on the time it takes to do the paperwork on the job site.
In the near future more and more employers will be requiring new hires to apply online; IATSE Local 13 will post the information as it becomes available.