Square, maker of the popular smartphone-supported credit card reader, is embracing the trend in card payment tech by moving away from the good ol’ swipes to the far more convenient taps. As all major credit card networks, including Visa, Mastercard, American Express, and Discover, start urging merchants to accept cards that work via embedded chips rather than the traditional stripes primarily for security reasons, this transition seems like a smart move for Square. But to take full advantage of the impending change and prove itself as a true herald, Square would be wise to quickly adapt the PIN-based security measure that will soon come with the new cards, also know as “chip-and-PIN” cards outside U.S..