https://en.m.wikipedia.org/wiki/Transaction_authentication_number#ChipTAN_/_Sm@rt-TAN_/_CardTAN

It’s a 2FA using your online login (1st factor) and an one time password generator (2nd factor) to authorize money transactions.

The USB is needed to power the generator and has no data transfer option.

• Aegis for 2FA
• always use 2FA where possible
• good old USB TAN generator for online banking
• never ever do online banking on my phone
• degoogled phone
• no facebook, insta, whatsapp etc. Signal and Liftoff are enough.

I’m planning to completeley switch to Linux on my computer. I’m also waiting for the Fairphone 5 and will install Ubuntu Touch on it when it will become available.

1. That thing has a PS/2 port. The port was designed in 1987 and became obsolet when USB (1997) was introduced. It has a lot of multimedia keys. They became common in later half of the 90s. Your keyboard was likely produced sometime between 1995 and 2000.

2. It’s probably a rubberdome. You can easy check that by levering a key cap out. They are only clammed in and can be pushed back in again.

Is it?

To me it seems it’s cheaper to build an antenna to serve 100-1000s of users than to dig and install cables to all of them.

A mitochondrion is the powerhouse of the cell!