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Tablet
SourceThe first publicly demonstrated system using a tablet and handwriting text recognition instead of a keyboard for working with a modern digital computer.
(Random day/month, only year is confirmed) -
Hotspots
HotspotThe first "hotspot" (referred to as LAN at the time) was created in 1993. It increased productivity greatly, as it allowed people to have interenet access anywhere they had a hotspot. -
Smartphone
SourceFirst models of the smart phone are invented, making a big difference in productivity. -
Handsfree Calling
BluetoothThe first Bluetooth (a hands-free device) was made in 1994, and revolutionized talking on the cell phone for people. It increased productivity on-the-go. (I used bluetooth because I couldn't find the record of the first hands-free device). -
Skype
SkypeSkype revolutionized international business, as it allowed conferences to be held with partner companies across the world in real time.