The self-checkouts at ALDI in the UK are very efficient. This is partly due to the barcodes, which occupy about a third of the packaging. Additionally, rather than requiring a staff member to scan their ID barcode for assistance, a simple metallic tag is used. This tag speeds up the process, especially for approving alcohol purchases or correcting weights.

The Tesco self-scan system is also cool. I can easily scan items and place them directly into my bags, bypassing the need for a trolley or basket. Although I'm occasionally checked to make sure I'm not shop lifting, which can be inconvenient during larger shopping trips, it happens infrequently enough not to be bothersome.

I always opt for self-checkout or self-shopping. While it may save costs for the retailers, it also saves me time.