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【区块链技术】康业金融认证员工卡片 防假冒职员骗款

康业金融科技就在其公司的员工证上加入QR code(二维码),背后使用的就是区块链技术,方便客户认证公司员工身分。当卡片的QR code被扫描时,扫描者会显示职员的名字,职衔、更会显示扫描者的装置的地点,甚至有该卡片被扫的次数。如果某职员卡片被扫描多次,更会弹出警告,提示该卡片或有机会已被盗用,防止不法分子以该卡片行骗。

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SQL: [142]  SELECT * FROM media WHERE media_status = ? and media_type = ? and media_highlight = ? and media_show = ? ORDER BY media_date desc limit -8, 8
Sent SQL: [150]  SELECT * FROM media WHERE media_status = '1' and media_type = '3' and media_highlight = '0' and media_show = '1' ORDER BY media_date desc limit -8, 8
Params:  4
Key: Position #0:
paramno=0
name=[0] ""
is_param=1
param_type=2
Key: Position #1:
paramno=1
name=[0] ""
is_param=1
param_type=2
Key: Position #2:
paramno=2
name=[0] ""
is_param=1
param_type=2
Key: Position #3:
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name=[0] ""
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SQLSTATE error code: 42000
Driver-specific error code: 1064
Driver-specific error message: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '-8, 8' at line 1