The smaller the text and images, the higher the dpi required to read and scan the barcode. Determining whether to print on 203, 300 or 600 dpi depends on 3 factors that are interrelated.
Any product can claim its ruggedness but without tests in accordance to MIL-STD-810G standards, you cannot be confident of how many times and how high it can be dropped without damaging it.
Safety is crucial for businesses that operate in potentially explosive environments. Ensure that the ATEX / IECEx approval of a product meets your hazardous area classification.