Many very interesting devices with USB connectors appear on the market all the time. For example blood pressure monitors (BPM). Most of the devices work as USB slaves (I do not know much about USB). In the medical field there a glucose meters, white blood cell counters, insulin measurements...
The you have a whole host of environmental monitoring devices. If one could hook up an Android to these easily it would be a godsend for collecting health data without a cumbersome PC.

So I wonder if it is possible to hook up a USB slave device to an Android. Specifically I would like to attach a blood pressure monitor (BPM) arm-cuff device and read the measurements. I read that the G1 has the hardware to be a USB host but not the software in the base Linux package, although it could be installed. But who wants to modify the OS for running a simple app. What about other Android devices - they will most likely not have the USB host option b/c the hardware is cheaper slave-only?

The possible solution could be to have a USB-slave into Bluetooth converter attached to the slave device (the BPM) and send the measurements as bluetooth. I wonder if there are such converters and where to get them?

(Credit marstein, copied from original forum)