Event JSON
{
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"pubkey": "da0144a94ff13350a814a23340117cc54109684ef639e2dbd1a100fae29d815c",
"created_at": 1719158509,
"kind": 1,
"tags": [
[
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],
[
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[
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[
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[
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[
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[
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[
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]
],
"content": "How does the card work without a battery? The reader sends a signal through its antenna to the card's antenna. This signal both transmits data and powers the card. The two antennas are so close that they are coupled magnetically rather than by radio. 5/15",
"sig": "c02e39f868ef9f0b481259e5da402bac2bf18ab296a56945f6e4615cb4bbae08a70d8cb8cd3142cf54d98f1a1b53e4f0ad68fdced3c71d4bb291b496a334874b"
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