The magnetic blocks that attach to magnetic cards are generally designed to be able to withstand extreme temperatures and extreme pressure.
However, they can’t be used in places like restaurants, where the chips must be stored for a few days or weeks before they can be used again.
And some people are worried about magnetic blocks breaking or becoming susceptible to corrosion.
“We’ve been using magnetic blocks in places where they don’t get much use because the chips can be easily destroyed,” says Mark Rizzo, chief technology officer at magnetic block maker Magmatic.
Magnetic blocks can be made of various metals, including aluminum and steel.
Magmatic also makes magnets, which can be either copper or nickel.
Most are available in small sizes for a small fee.
For instance, Magmatic makes a 10-inch block with a magnetic strip that’s designed to hold up to 25 magnetic bars.
Rizzo says it’s not clear why magnetic blocks with smaller sizes are being made so often.
He says it could be because customers are looking for larger blocks, or that people are buying a lot of magnets, or because people have bigger wallets.
It’s a good question.
Magmatic recently added a magnet to its magnetic block, the first magnetic block to do so, and says it plans to expand the size of the block to 100,000 magnetic bars by 2020.
But it’s important to note that magnetic blocks aren’t the only thing magnetic cards can hold.
The cards can also hold credit cards, airline miles, debit cards and other payment cards.
Magnet cards can be purchased from retail stores, and some companies sell magnetic blocks at electronics stores.