did you know poswallet? i did but then they did go down and the will first come up again in 2018 so i found this site on youtube coinsmarkets that is an exchange and an staking wallet
so if you do not want a computer that is running 24 7 then you can just deposit 100$ and buy a pos coin and begin to stake
their system works that you will get one stake per day at (GMT time @ 00:00 ) and you can read more on the site
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From @flerze