以前，动态口令牌仅限于小型设备，比如挂在许多公司员工钥匙链上的那些小玩意。

Historically, code tokens have been confined to little devices, like ones that hang off many corporate employees' key chains.

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使用一次口令以生成令牌。

The password is used once to generate a token.

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如果希望获得口令后，保存口令供以后使用，那么Sametime令牌提供了一种更安全的方式。

If you are planning to get the password once and store it for future use, Sametime tokens provide a more secure alternative.

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