How can I restrict an account to market actions only?

[xeroc]

For security reason, I want to set up an (sub) account or active key that can only do market related actions like buying, selling, shorting, covering. Transferring will be disabled for this account and some other account or parent account can do that.

How can I achieve this?

Currently that cannot be achieved .. once you have the private key (of the subaccount) that subaccount is a full-game player on the blockchain.

not sure if the devs intend to/or even can implement such a feature efficiently

[ripplexiaoshan]

Separate you accounts into different wallets would be fine

[zhangweis]

For security reason, I want to set up an (sub) account or active key that can only do market related actions like buying, selling, shorting, covering. Transferring will be disabled for this account and some other account or parent account can do that.

How can I achieve this?