Requiring everything to be one-way-encrypted using a strong algorithm key means that your data is very secure, but not convenient to use.

使用强大的算法密钥将所有数据都进行单向加密意味着您的数据非常安全，但是使用时很不方便。

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"The problem is, the passenger and flight information encoded in barcode is not encrypted in any way, " wrote Mr Butler.

BBC: Boarding pass barcodes 'can be read by smartphones'