A closer look

Before the iPhone gave everyone a 3D camera in their pocket, the 1952 View-Master Personal system let you shoot your own stereoscopic memories. The camera itself was a heavy, overpriced brick, but the real scam was the film processing. You couldn't just develop the pictures; you had to pay a premium for a specialized technician to punch out microscopic squares of film and mount them into proprietary cardboard wheels. Most families gave up after exactly one vacation.