There's a lot of stuff under P.
First, Polaroid Cameras. I'm sure you've heard of it. Maybe, some of you haven't seen an actual one, but you've seen its kind of photos through Instagram or other camera apps from your phones. I've used one in the past. Point, shoot, print, fan the print-out, and fan more. Meaning, dry it out. *laughs* I've used it taking a lot of my pets' photos back home in the Philippines. Now, that makes me feel old. *cringe* I don't really miss it much, because I don't consider it producing a good quality picture. However, it surely made a big difference when it comes to "instant" cameras. No need to wait for film to develop.
Next is Passwords. Technology has shown us new ways of passing security: retina displays, finger prints, and hand prints. Big example for this is my 24 hour fitness gym membership. My password to enter the gym is not my driver's license anymore. It's my index finger print and phone number. Passwords aren't obsolete yet. It just evolves to something uniquely you. This is being tried out. Not all establishments use this yet. Maybe, they're all waiting for the tongue print. Who knows?
Last but not the least, Plastic Bags. Lots of stores have banned plastic bags in connection to the green campaign of different organizations. At least, here in the Bay Area they're mostly banned. They're now replaced by reusable bags. Now, if only my brain won't forget to bring it with me when shopping. Sigh.
What do you think of these old school stuff? Pros and cons?