Smart glasses - the future of mobile work?

Imagine following circumstances:

It is time for school children to start their summer vacations and schools, colleges and universities are closing for holiday season. Lots of graduation parties to come and obviously it is high season for florists. In Flora Rose´s flower shop the cold rooms gives an alarm and the thermometer shows that the inner temperature is rising quickly. Dozens of customers are in danger of missing their flower orders if the temperature keeps on rising. Head florist contacts the maintenance and they promise to send a service person immediately to check the situation.

John Moore, an experienced mechanic on refrigerator units, is just finishing his last task at a customer. He hears a silent noise and in front of his eyes appears a message

Because John happens to be available and nearby the customer, he decides to take the job. He says: "Accepting the task", and in seconds in front of his eyes appears a map to the destination. John jumps into his vehicle and drives quickly to the location - his eyeglasses show him directions if needed. When arriving to the destination he says "At sight" and immediately he can see the information the customer earlier reported and also data about the device and system needing the maintenance.

After opening the refrigerator unit John notices that he has not worked with this type of units before. He searches a maintenance guide for this specific unit and realizes that he does not have required spare parts in his car. He decides to contact a colleague more familiar with this old type units. John takes a video call and with the integrated video camera on his smart glasses he shows image of the unit in question. "Oh, that seems familiar, probably the control valve is jammed", points the colleague immediately out and instructs John to use a spare part suitable for newer models.

With colleagues guidance John is able to fix the refrigerator unit and shows the colleague yet images of the fixed device, and the colleague then approves John´s work. John scans with his smart glasses the barcode of the spare part his used and confirms (to?) the glasses "Task completed". At the very moment the data about completed service task reaches the maintenance company John works for: task is completed; used time; travel time and distance; used spare parts etc. All the necessary information required for invoicing purposes.

Temperature in the cold room starts to decrease and the customer is satisfied.

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