Their invention could be used to make a sparkling substitute for paint, banknotes that are hard to counterfeit and chemical sensors that can act as visible sell-by dates.
他们的发明可能被用于替代油漆以获得更闪亮的色彩，以及制造难以伪造的纸钞，还可利用其化学感应特性制作可见的最迟销售日期。
In some cases, the fingerprint will act as a substitute for typing in user names and passwords.
有些情况下，指纹可替代用户名和密码的输入。
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