DeFi on ETH is already widely recognized by the public, with well-known projects like Uniswap, Curve, and Balancer. These tools have easiness of use and powerful functions, which are also easy to list tokens. However, these features may make the tools a hotbed for evildoers. Hence, whenever we conduct ERC20 token swap (especially some new tokens), the process involves a certain degree of risk. The new version of TP wallet comes in to place at the right time — the newly added [Action] and [Approved Amount] are evidently important. As mentioned above, to approve a transfer is like to sign a contract. In TokenPocket, if the maximum amount of the tokens that can be used in the contract is X, and when the required amount is larger than X, second approval permission will be triggered.