Handheld scanners (Zebra DS, Honeywell Granit, Code CR) are best for high-volume single-purpose scanning — receiving, shipping, point-of-sale. Mobile computers (Zebra TC, Honeywell CT, Datalogic Skorpio) bundle scanning into a device that runs picking, inventory, and warehouse-management apps. For operations where the operator needs more than scan-and-confirm, mobile computers are worth the additional cost. Pure scan-and-confirm workflows are cheaper with handhelds.

Direct-thermal printing applies heat to chemically-treated labels — no ribbon needed. Labels fade in sun and heat, so it's correct for short-term applications like shipping. Thermal-transfer printing melts ribbon ink onto durable label stock — used for permanent asset tags, outdoor labels, and chemical-exposure labels. Choose direct-thermal for cost on short-term labels and thermal-transfer for durability on long-life labels.

Industrial printheads last 30-50 million inches of printing on a well-maintained printer with matched ribbon and media. Desktop printers run 20-30 million inches. Mismatched ribbon/media, abrasive labels, and inadequate cleaning shorten life dramatically — to under 5 million inches in worst cases. Schedule printhead inspection at every label-roll change and cleaning at every shift.

Technically yes for ribbons in compatible width — practically no without quality risk. Manufacturer-recommended ribbons match the printhead's resistance, dot timing, and ink chemistry. Generic ribbons often cause faded prints, increased printhead wear, or static buildup that damages electronics. The cost savings on ribbon rarely justify the operational risk; stick with the manufacturer's recommended consumables for production printers.

Code 128 is the universal default for 1D barcodes — high density, alphanumeric. UPC-A and EAN-13 are required for retail goods. QR and DataMatrix are required for compliance, mobile payment, and many compliance labels (pharma DSCSA). Code 39 is older and lower-density — used in legacy systems. For new applications, lead with Code 128 (1D) and DataMatrix (2D) and add others only when required.