DS1990A iButtons pre-installed in keyfobs (also known as keytabs), ready to use. Also available: more iButton and keyfob models and custom printing.

Building your own iButton device? We have a variety of iButton probes and receptors with and without LEDs, all of which are operated by iButtons.

Use your iButtons as "keys" to secure important spaces. Two different models are available. Also available: iButton Readers with USB interfaces!

We offer 14 models of high-quality Demiurg RFID readers, some with 1-Wire outputs, some with RS-232 outputs; some with LEDs and some without.