IoBNT - nano sensors that can be utilized for medical investigations, Another application in Industrial systems where effluents get analyzed. What is the future role and how long before these become used widely.

As IoT systems become common in general life and Industrial systems , there could be concerns related to its security. Can these systems be hacked and made to malfuction. How can these security concerns get addressed as wireless communications is mostly followed by iot devices.

Unlike computer systems that need regular patches, the PLC controller often are standalone or in isolated networks. They often get neglected when it come to upgrade projects in the organization and their operational life is often stretched much beyond their ideal lifespan. It is not uncommon in plants to come across some systems that are more than 15 or more years old. What would be the ideal operational lifespan of such systems and can it be enforced in some ways like computers where new apps donot run on old systems.

Rockwell Automation / Siemens / ABB / Yokogawa / Schneider .....

Some of the names that can be listed like modbus, ethernet, fieldbus etc. How many else are out there and can there be a single one in the distant future.