The card holder has slots for Mini SIM (old phones and adapters), Micro SIM (common smartphones), Nano SIM (iPhone/iPad), and even for Micro SD flash card.
Almost as slim as a credit card, less than 2mm thick. Can be made of plastic, plexiglass or metal. A variety of customizations available.
Standard credit card shape and size fits any pocket, wallet or card holder.
post the question at Facebook:
Need a plastic card of the standard size, where I can insert 5-10 SIM cards to store them. Ideally, that the size adapters could be taken out of it. Where to get or how to cut?
P.S. Should we go to #KickStarter with this idea?
Some blueprints, brainstorm at Facebook - and the first prototype was printed on a 3D printer by Ivan Luginets
After some research we found out that SIM and SD cards are matching each other :)
On weekend, KARPOLAN was inventing a different concept of the cardholder. He created prototype using old credit card, paper, clip and glue :)
Mission complete! Handmade SIM-card holder protoype is only 1.5mm thick!
Ivan replaced the huge SD card slot with 2 combo-slots for Micro/Nano SIM and added clip for iPhone/iPad to the plastic holder.
We’ve printed the thin SIM card holder on a 3d printer. Looks like this is the most compact credit-card sized holder for SIM and SD cards on the market!
This website has been started. You can pre-order the SIM/SD card holder and purchse some other cool things™ right now.