PoSToken is not only an Ethereum token, but also a brand new Token Standard for Proof-of-Stake tokens.
Min Coin Age
1st Yr. Interest
Holding some PoSToken for a period of at least 3 days, greater than or equal to the Min Coin Age.
PoSToken provides two methods to trigger PoS mining:
1.Sending a transaction to your own address with any amount of POS.
2.Using MyEtherWallet.com or Mist or any other software that can interact with contracts to execute mint() function.
Not sure about your account's coin age or current interest? Executing these functions:
1.annualInterest() : Return current annual interest.
2.coinAge() : Return coin age of your account. Return 0 means that your token doesn't meet the min coin age now.