Kerry County Council paid over €95,000 to have library books tagged last year.
Tagline Ltd were paid for the tagging of library books in nine locations in the county, including the council headquarters and branch libraries.
Tagline Ltd uses radio frequency technology to tag or track books via smart barcodes.
Three payments were made in 2018 to Tagline Ltd: €38,007 was paid in January; €34,300 in March; and €22,826 in May.
This means the company was paid €95,163 in 2018.
The information was revealed by Kerry County Council in their Purchase Orders over €20,000.