请问HN：如何在不冒着被锁定风险的情况下兑换礼品卡？
我年轻的女儿生日时收到了两张亚马逊礼品卡，但它们看起来像是被篡改过的。我想在不进行兑换过程的情况下检查它们是否有效：我想避免受到可能会锁定我账户的欺诈检测算法的影响。前不久有个Hacker News的故事，讲述了有人因类似原因被锁定了iCloud账户，这种风险对我来说似乎不值得。我肯定不是唯一有这个问题的人。人们是如何“安全”地处理这个问题的呢？
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My young daughter got 2 Amazon Gift cards for her birthday, but they look like they've been tampered with.
I would like to check whether they are valid or not without having to go through the redeeming process: I want to avoid being at the mercy of a fraud detection algorithm that may lock me out of my account.
There was a HN story not too long ago about someone who got locked out of their iCloud account for similar reasons, and the risk doesn't seem to be worth it to me.
Surely, I can't be the only one with this problem. How do people do this "safely"?