That RSA secureID thing is a keychain size little fob with a screen that flashes random numbers every 60 seconds or so. I used to work for an insurance company that used those to give workers access to their VPN. It is not a stock market thing. ANYONE with a private network can choose to use those for added security because the access code changes randomly every minute.
That thing is NOT a trading key.It's basically a keychain with a numeric passcode flashing on it's screen that changes.
Also, even if he did get access to someone's network using this thing, it can be disabled at any time by the owner of that network.
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