Category Archives: cellular network

A Battery Sipping Cellular Mailbox Notifier

Like many of us, [Zak Kemble] has an indeterminate number of tiny packages coming his way from all over the globe at any given time. Unfortunately, the somewhat unpredictable nature of the postal service where he lives meant he found himself making a lot of wasted trips out to the …read more

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Posted in cellular network, home hacks, mailbox, Microcontrollers, notification, power management, telegram | Leave a comment

36C3: SIM Card Technology From A to Z

SIM cards are all around us, and with the continuing growth of the Internet of Things, spawning technologies like NB-IoT, this might as well be very literal soon. But what do we really know about them, their internal structure, and their communication protocols? And by extension, their security? To shine …read more

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Posted in 2g, 36C3, 3g, 4g, 5g, Cellphone Hacks, cellular network, cons, eSIM, gsm, sim card, technology | Leave a comment