Astra Taylor's iPhone has a cracked screen. She has bandaged it with clear packing tape and plans to use the phone until it disintegrates. She objects to the planned obsolescence of today’s gadgetry, and to the way the big tech companies pressure customers to upgrade. Taylor, 36, is a documentary filmmaker, musician and political activist. She's also an emerging star in the world of technology criticism. She's not paranoid, but she keeps duct tape over the camera lens on her laptop computer - because, as everyone knows, these gadgets can be taken over by nefarious agents of all kinds. Taylor...