The same “near field communication” chips enable phones to be used as train tickets and office passes, so acting as front-door keys or car keys as well would not be a giant leap.
此类“近距离通讯”让电话可当作火车票与办公室通行证来用，那么用电话当家门钥匙或车钥匙也是顺理成章的事。
This is not what I asked for, I told myself, as I slipped the door keys into an envelope, sealed it and pinned the envelope to the wall just inside the front door.
在我把门钥匙塞进一个信封、封住口并把信封钉在前门里面的墙上时，我告诉自己说，这不是我所寻求的。
It's mounted next to our front door and holds house keys.
我们把它装在前门旁边用来挂钥匙。
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