Technology

Annette Carlin feels trapped.

Before the pandemic, Ms. Carlin, who is 84, loved to go on walks in Novato, Calif., with her grandchildren and dance at the senior center. Since March, though, she has been stuck indoors. She has been eager to sign up for a vaccine and begin returning to normal life.

But booking an appointment has been a technological nightmare. Ms. Carlin cannot afford to buy a computer, and would not know how to navigate the internet in search of a shot even if she could. While members of her family might be able to help her there, she avoids seeing them as a safety precaution.