In the standard Injay configuration, the NFC tag is located on the syringe piston rod and the activator on the finger flange, which makes it by design compatible with all standard PFSs, regardless of their materials (plastic, glass), needle formats (staked needles, luer lock, luer cone) or size (0.5 mL, 1 mL long and short, 2.25 mL or other specific sizes). But other configurations can be explored to meet specific requirements, such as compatibility with certain safety systems.