Many university/college level electronic textbooks are available for downloading but until every student has a computer (and internet connection), few schools/school districts will put them on the secondary reading lists. Chips are not needed... just a download link.

etexts are great because they can be quickly updated and never need repair but you don't get to read the rude remarks written by previous students.

My niece's school required clear backpacks two years ago but got rid of that requirement after parents complained about having to buy new bags every couple of weeks.