Request a Security ID. Activate your Security ID to link it to your E*TRADE account. The next time you log on to your account: Enter your user ID in the user ID field of the log on box. Enter your password and the Security Code from your Security ID token (with no spaces). While trade execution is usually seamless and quick, it does take time. And prices can change quickly, especially in fast-moving markets . Because price quotes are only for a specific number of shares, investors may not always receive the price they saw on their screen or the price their broker quoted over the phone.