Our Online Store have the new products: RFID antenna board. Currently it can work with
JC10M24R and
JCOP4 card chips.
Compared with normal cards, the antenna board module has a smaller size and fixed holes, which is easy to integrate in the IOT(Internet Of Things) project.
JavaCard Applet Development Related Questions and Answers.
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by login » Wed Oct 24, 2018 5:11 am
When I did the experiment, I wrote the third block of sector 0, which is the tailor block, counting from 0, to 0. Is there any way to recover?
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wumindejia
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by wumindejia » Wed Oct 31, 2018 1:54 am
Generally, the block data can be rewritten only after the KeyB is verified to be correct.The initial KeyA and KeyB in each block 3 are the manufacturer's 12 "F" default values.When modifying the control value, do not modify the default passwords KeyA and KeyB first. After the control bit is successfully modified, change the new password value.
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