So instead of a yes&#x2F;no confirmation, you force the user to explicitly type what they are doing, i.e. &quot;Sell 610,000 shares of stock X for 1 yen each.&quot;<p>This is similar to how Github forces you to type the name of a repository when you try to delete it.<p>You can also configure a threshold such that the &quot;hardcore&quot; prompt kicks in only if the system detects that the user is trying to do something unusual, i.e. sell a stock for much cheaper than it is.