How are the dividends paid out? Where do the tokens need to be stored? And how is it possible to see who has the tokens in order to make sure they are paid?
From their FAQ:
https://taas.fund/faq.html#answer2323 - How does the smart contract know where to send the funds? Do the tokens have to be in a wallet to get paid?
A: Payout is done quarterly in the form of ETH directly to your TaaS token address. Tokens may be stored at taas.fund wallet or at myetherwallet.
Basically, that's how alot of these Ethereum based Tokens ICOs are done now. They use ETH smart contracts to automate the payout to your account where you hold the tokens.