Revel offers POS hardware packages and “Revel Advantage” payment processing, but the company doesn’t publish prices for either. Again, you’ll need to contact sales for a quote.

Like Stripe and Square, PayPal sells POS hardware designed to work with its software. In-person sellers can accept credit and debit cards, mobile wallets and payments via Venmo, which PayPal owns.

The cosine number transform (CNT) is a cosine-like number-theoretic transform, which has been employed as the basis for multimedia security schemes. In this paper, we propose hardware architectures ...