Amazon has the Nice Digi Smart Fingerprint Keypad Door Lock with Knob for a low $36.99. Free Shipping after Coupon Clip and Code: “33Y1ND01” (Exp 11/12). This is originally $100, so you save 63% off the list price.

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About this item

• 5-in-1 Unlocking: Choose your preferred unlocking ways: APP +50 fingerprints +50 passwords +50 cards +2 keys. If you connect to a WiFi gateway (sold separately), you can also control it remotely.
• Absolute Security: Made from durable aluminum alloy and tested for 100,000 uses. All data is stored locally, with real-time monitoring via the APP to safeguard your home at any time.
• Easy Installation: Fits 99% of American homes’ front or room doors. Swap your old lock in just 10 minutes with a screwdriver—no extra drilling needed. Our front door knob works for both left and right-hand use.
• Ease of APP: Easily connect and control the smart knob via Bluetooth in just a few minutes. Setting right at your fingertips—no additional fees required.
• Guaranteed Satisfaction: Safety, stylish, and protected by a 30-day refund, 1-year warranty, and lifetime support. Upgrade to secure home living today!