Simplify the following text for a Grade 12 native English-speaking person.
Original: The reason barcodes are business-friendly is that the scanners are relatively low cost and extremely accurate compared to key-entry , with only about 1 substitution error in 15,000 to 36 trillion characters entered .
Simplified: Barcode scanners are relatively low cost and extremely accurate compared to key-entry , with only about 1 substitution error in 15,000 to 36 trillion characters entered .