Barcodes vs. magnetic stripe cards: Are they more or less secure?

Where do older magnetic stripe cards fall short of providing adequate security, and where do newer smart cards excel?

Describe an application where smart cards provide sufficient security but magnetic stripe cards do not

Where do older magnetic stripe cards fall short in providing adequate security when compared to modern smart cards?

Where do magnetic stripe cards fall short when it comes to security, and where do smart cards excel?

Explain fax and fax machine. Describe a standalone fax machine. Unlike Printers employ individual sheets of paper (even continuous-form paper). Fax machines utilize roll paper (perforated sheets). fax meaning modem. How may a fax document be used? System unit has modem.