Amazon is developing smart eyeglasses for delivery drivers to improve efficiency by offering turn-by-turn navigation. "Such directions could shave valuable seconds off each delivery by providing left or right directions off elevators and around obstacles such as gates or aggressive dogs," reports Reuters. "With millions of packages delivered daily, seconds add up. The glasses would also free drivers from using handheld Global Positioning System devices, allowing them to carry more packages." From the report: Amazon's delivery glasses, the people warned, could be shelved or delayed indefinitely if they do not work as envisioned, or for financial or other reasons. The sources said they may take years to perfect. "We are continuously innovating to create an even safer and better delivery experience for drivers," an Amazon spokesperson said, when asked about the driver eyeglasses. "We otherwise don't comment on our product roadmap." [...] The delivery glasses in development build on Amazon's Echo Frames smart glasses, which allow users to listen to audio and use voice commands from Alexa, Amazon's virtual assistant, the people said. Known by the internal code name Amelia, the delivery glasses would rely on a small display on one of the lenses and could take photos of delivered packages as proof for customers, the sources said. Amazon released in September an unrelated chatbot for third-party sellers that is also known as Amelia. But the technology is still in development and Amazon has had trouble making a battery that can last a full eight-hour shift, and still be light enough to wear all day without causing fatigue, the people said. As well, gathering complete data on each house, sidewalk, street, curb and driveway could take years, they said. Delivery drivers visit more than 100 customers per shift, Amazon has said. With increased efficiency, Amazon could ask drivers to ferry more packages and visit more homes. The Seattle company could face other obstacles, including convincing its thousands of drivers to use the eyeglasses, which may be uncomfortable, distracting or unsightly, the people said, not to mention the fact some drivers already wear corrective glasses. However, much of Amazon's delivery force consists of outside companies, meaning Amazon could make wearing the glasses a contractual requirement, the people said. [...] The embedded screen in development is also slated for a future generation of the Echo Frames that could be released as soon as 2026's second quarter, two of the people said. Read more of this story at Slashdot.