In 2019, executives need to look anew at mobile and figure out what technology displacements make sense.

For example, how much sense do expensive dedicated barcode scanners make today when employees almost certainly have a smartphone in their pocket with the CPUs and cameras to do a far better — and far, far, far cheaper — jobLet's set aside for the moment who owns that smartphone, whether it's a device purchased by thecompany at a volume discount or BYOD-authorized smartphone bought by the employee.

Either way, that little computer has some serious number-crunching capabilities — Apple's mobile A12 chip's neural engine, for example, claims to handle 5 trillion operations per second — as well as some impressive photography chops, such as the iPhone's 7-megapixel cameras.