Some British supermarket companies are asking their warehouse

workers to wear small computers, calling "electronic tags". The 【M1】__

companies say that these tags will to help them to reduce costs 【M2】__

and increase the efficient delivery of goods and food to stores.

The system uses American satellite and radio technology

send messages to the workers. In a report Professor Blakemore 【M3】__

from the University of Durham said that the use of

these tags is making some workplaces more like prisons. 【M4】__

The technology arrived from the US at the start of the year

and more and more companies are using it. Almost 10,000

employees are using it to supply good to well-known British 【M5】__

supermarkets. Trade unionists representing workers are

worried that companies could use the technology to check

what workers are doing work. They are asking for special 【M6】__

measures to make sure that this does not happen.

Under the system, workers have to wore computers on 【M7】__

their wrists, arms and fingers, and sometimes they have to wear a

special vest contained a computer that instructs them 【M8】__

where go to collect goods from warehouse shelves. 【M9】__

The system also allowed the store to send orders to workers' computers. 【M10】__

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