Buyers have been given more reason to purchase two of the current best laptops on the market with Dell's announcement of its fingerprint reader option to both Dell's newest XPS 13 and XPS 15.

Initially, the product listings on Dell's website did not display fingerprint scanner specification on February models. It turned out that the fingerprint reader option was on its way but was still unavailable on the earlier configurations.

Even though it was unclear how much the additional option costs when Dell revealed the upgraded XPS 15 (9560), it has been confirmed that Dell will only charge $25 for the sensor, which is strategically located below the arrow keys for convenient everyday use. The fingerprint reader features a full "Windows Hello" support, the Windows 10 operating system's more personal and sophisticated way to get instant access to consumers' devices using fingerprint or facial recognition.

Customers also have the option to add a fingerprint sensor to the new Dell XPS 13 (9360), a notebook that hit the market a couple of months ago. Similar to XPS 15, the additional feature will only cost $25.

The Dell XPS 13 comes with a 13-inch display enclosed in an 11-inch frame. It is powered by Core i5-7Y54 processor and costs $999 for a full-HD touch screen. It comes with 4 GB of random access memory (RAM) and 128 GB solid-state drive (SSD). Its upgrade, which is a whopping $1,199, adds the seventh-generation Intel Kaby Lake processors, with a battery capable of keeping the system running for up to 22 hours and a much stronger WiFi function. It has 8 GB of RAM and a bigger space of 256 GB SSD. XPS 13 can be configured up to 512 GB of storage and 16 GB of RAM, with a faster Core i7-7Y75 central processing unit (CPU).

The polished Dell XPS 15, on the other hand, comes with a 15.6-inch UltraSharp 4K Ultra HD display with 3840x 2160 resolution. There are not many modifications, but it has been refreshed to include the latest Kaby Lake processors and a 4 GB GeForce GTX 1050 graphics card. Price ranges from $999 to $2500 depending on the specifications.

The fingerprint reader is available on all versions of the XPS 13 and XPS 15 Windows 10 laptops from the Dell website.