Hello and welcome! First off we need a little more info and one implant may not be able to do everything you want.
Let’s break this down:
what card do you use at work? Can you try and scan it with your phone using an app called taginfo. Can you post a picture of the badge? (Have you got an iPhone or android?)
Not really possible how most people think, your options are either crypto currency cold storage or getting a payment microcard from your bank (if the do it, it looks like an overgrown sim card) and having that converted by DT.
That ones nice and easy pretty much any HF (13.56MHz tag will allow this) the data is stored on the tag (may even be able to use the same tag for access depending on the acces control)
yes they are and great fun, options for this are xleds (HF or LF) or a xSIID which is a HF tag that could also be used for contact info.