**Depending on your country's laws it may be illegal to sniff wireless networks for MAC addresses. Please check and respect your country's laws before using this code!**
- (e.g. US citizens may want to check [Section 18 U.S. Code § 2511](https://www.law.cornell.edu/uscode/text/18/2511) and [discussion](https://github.com/schollz/howmanypeoplearearound/issues/4) on this)
- (e.g. UK citizens may want to check [Data Protection Act 1998](https://ico.org.uk/media/1560691/wi-fi-location-analytics-guidance.pdf) and [GDPR 2018](https://ico.org.uk/for-organisations/guide-to-the-general-data-protection-regulation-gdpr/key-definitions/))
- (e.g. Citizens in the the Netherlands and EU may want to read [this article](https://www.ivir.nl/publicaties/download/PrivacyInformatie_2016_6.pdf) and [this article](https://autoriteitpersoonsgegevens.nl/nl/nieuws/europese-privacytoezichthouders-publiceren-opinie-eprivacyverordening) and [this decision](https://edpb.europa.eu/news/national-news/2021/dutch-dpa-fines-municipality-wi-fi-tracking_en))
- (e.g. Citizens in Germany may want to read [this article of Wissenschaftliche Dienste des Deutschen Bundestages](https://www.bundestag.de/resource/blob/538890/3dfae197d2c930693aa16d1619204f58/WD-3-206-17-pdf-data.pdf))
If you use this software you do this at your own risk. That means that you alone - not the authors of this software - are responsible for the legal compliance of an application using this or build from this software and/or usage of a device created using this software. You should take special care and get prior legal advice if you plan metering passengers in public areas and/or publish data drawn from doing so.
Paxcounter generates identifiers for sniffed Wifi or Bluetooth MAC adresses and and collects them temporary in the device's RAM for a configurable scan cycle time (default 60 seconds). After each scan cycle the collected identifiers are cleared. Identifiers are generated by using the last 2 bytes of universal MAC adresses. Personal MAC adresses remain untouched and are not evaluated. Identifiers and MAC adresses are never transferred to the LoRaWAN network. No persistent storing of MAC adresses, identifiers or timestamps and no other kind of analytics than counting are implemented in this code. Wireless networks are not touched by this code, but MAC adresses from wireless devices as well within as not within wireless networks, regardless if encrypted or unencrypted, are sniffed and processed by this code.
