When I created a Minecraft account for my kids, I had to create an account on Mojang and buy a Minecraft account using a credit card.
As my kids use the Mojang account details to sign in to Minecraft, I've been reluctant to allow them to know the password. But they need to keep signing in as it times out the login credentials from time to time and it would be more convenient if they knew their own password.
Are there any security implications from them knowing their own Minecraft passwords? My primary concern is the fact that I used my credit card to buy the original account, but also there may be other implications given that once the kids know them, I don't have the same level of security over the passwords as when only I know them.