A store has been attaching tags with barcodes to merchandise, allowing employees to use barcode readers to scan merchandise at the cash register. However, the wireless barcode readers need new batteries often, and using this system for inventory tracking is very time-consuming. What emerging technology should the department store use? touch screen

Smart card

RFID

CAD

pls hurry i need this answer right now.

Perform the following tasks: a. create a class named testclass that holds a single private integer field and a public constructor. the only statement in the constructor is one that displays the message “constructing”. write a main()function that instantiates one object of the testclass. save the file as testclass.cpp in the chapter 08 folder. run the program and observe the results. b. write another main()function that instantiates an array of 10 testclass objects. save the file as test class array.c . run this program and observe the results.

Which network media uses different regions of the electromagnetic spectrum to transmit signals through air? uses different regions of the electromagnetic spectrum to transmit signals through air.

Write an essay on online collaboration, how to do it, the challenges, resolving the challenges, and consider whether the risks are greater than rewards. ( need )