Forum › MIFARE general topics and applications › Classic 1K : Write To A Previous Block Without Re-Authenticating › Reply To: Classic 1K : Write To A Previous Block Without Re-Authenticating
Hi Matthew,
Yes, you must authenticate again. Therefore it is useful, to collect data in one sector which are need to be read together. The MIFARE Classic 1K contains 16 sectors with 4 blocks, but the Classic 4K contains 32 sectors with 16 blocks and 8 sectors with 16 blocks. So, if you need more than 4 consecutive blocks, you ca use the 4K card.
The TapLinx team
Yes, you must authenticate again. Therefore it is useful, to collect data in one sector which are need to be read together. The MIFARE Classic 1K contains 16 sectors with 4 blocks, but the Classic 4K contains 32 sectors with 16 blocks and 8 sectors with 16 blocks. So, if you need more than 4 consecutive blocks, you ca use the 4K card.
The TapLinx team
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