Will probably be heading to this in the future, safer for us as it's implanted to our body.
As we go to the digital world, this is just going to be a norm going forward because technology will change everything for the better.
Imagine, you can just walk in a grocery, get all your needs and go out and then get scan, transaction done, easy for the businesses this way, and this is just one of the good example as its also applicable with services.
This kind of things sounds me like science fiction. I wouldn't let something which is a micro-chip or not to be injected to my body. Also, it doesn't make more secure my cryptocurrencies.
But this is going to happen, we have to adopt with the changes if majority will do.
It will only not secure if you will bring everything, it's just like bringing a wallet but attached to your body, refill when you needed to.