@yeka has answered you perfectly ( It’s what he does)
I will just chime in from a fellow Kiwi’s perspective/
This is going to sound like gobbledygook, but just go with me on this.
Vivokey is the Company, they have a SOON™ to be released line of implants called APEX, it will come in a couple of different form factors, Unfortunately for US down under ( Unsure about Aussie though) Fidesmo is the backbone of the APEX banking system, which is not available in NZ yet!!!
However, I have a payment conversion
Read about it here
I will add, ASB are no longer doing the paytags, BUT Westpac are
I opened the ASB account just for the sole reason of the conversion.
When my implant expires, I will be replacing it with a Westpac one.
After that one expires, I will hopefully have Fidesmo payment available on my APEX.
The good news for us, is we have user friendly payment terminals, I have not found a paywave terminal that has not worked yet.
I’m not sure which City you are in, there are only a couple of Piercers that are on the partner map
I got my Payment install done by a Pro in Auckland, the rest of mine, my mate has done.
There is new Piercer that @ethan_rose had added to the map on K’Road, Auckland and she sounds really good and interested in the tech, and keen for some xSIIDs herself.
Payment is obviously what you are interested in, but is there anything else that you may want to get an implant for
Work / school / home / gym etc. access
Sharing contact info
Online security etc
I can’t say enough about the 2 companies Dangerous Things and Vivokey especially Amal, Michelle 
THE best company customer service and community you will find, and the Payment Conversion, is well worth it, I use mine almost daily.
Any more questions mate fire away