Hi there, We have experienced in developing Bluetooth enabled Device that comprises of (1) Thermal printer, (2) Magnetic Card Reader, (3) Smart Chip Card Reader, (4) NFC Reader, (5) LCD, (6) Battery. This Device communicates to the Mobile phone or PC through Bluetooth. We have manufactured the product (using manufacturing outsourcing services through our contact in China) and is commercially launched in the market.
Your requirement seems to be cut down version of this product. It comprises of circuit having Microcontroller interfaced with smart chip card reader, bluetooth and power management.
I'll share more details with you once I receive your initial response. The details consist of smart card reader type mainly, like which card type it will read and there are many standards available in the market and it selection depends upon the application.
Look forward to your response.
Thank you.
Regards, Harris