CTCStore offers the AceAbove IMUCA Anti-Blue Light Fingerprint Screen Protector for iPhone 5 / 5S for $9.99. Coupon code "JCNFZ4LK" cuts that to $3.29. With free shipping, that's $13 under the lowest total price we could find for a similar protector. This screen protector purportedly also protects your eyes from your phone's blue light emissions. Deal ends April 19.