There are several real-time features that can enhance the user experience and increase sales in an eCommerce store. These features aim to provide instant information, personalized recommendations, and a dynamic shopping experience. Here are some interesting real-time features to consider:

1. Live Chat Support: Incorporating a live chat support system allows customers to interact with support agents in real-time. This feature enables customers to seek assistance while browsing, leading to improved customer satisfaction and increased conversion rates. Companies like LiveChat and Intercom offer live chat solutions that can be integrated into an eCommerce store.

2. Real-time Inventory Updates: Displaying real-time inventory information helps customers make informed decisions about product availability. This feature prevents customers from adding out-of-stock items to their carts, reducing frustration and improving the overall shopping experience. Platforms like Shopify and WooCommerce offer plugins and integrations that provide real-time inventory updates.

3. Personalized Recommendations: Implementing real-time recommendation engines based on user behavior and preferences can significantly enhance the shopping experience. By analyzing customer data in real-time, platforms like Nosto and Barilliance can provide personalized product recommendations, similar to Amazon's "Customers who bought this also bought" feature.

4. Dynamic Pricing: Real-time dynamic pricing allows eCommerce stores to adjust product prices based on various factors such as demand, competition, and customer behavior. This feature can help maximize revenue by offering personalized discounts or promotions to specific customers. Companies like Dynamic Yield and Prisync provide real-time pricing optimization solutions.

5. Social Proof: Integrating real-time social proof notifications can build trust and increase conversions. These notifications display real-time information about recent purchases, product reviews, or customer activity, creating a sense of urgency and credibility. Tools like Fomo and ProveSource offer social proof plugins that can be easily integrated into an eCommerce store.

6. Order Tracking: Providing real-time order tracking information allows customers to stay updated on the status of their purchases. This feature improves transparency and customer satisfaction, reducing support inquiries. Popular shipping carriers like UPS, FedEx, and USPS offer tracking APIs that can be integrated into an eCommerce store.

7. Live Product Demos: Offering live product demonstrations or virtual shopping experiences can simulate an in-store experience and help customers make more informed purchase decisions. For example, Sephora's Virtual Artist allows customers to try on makeup virtually using augmented reality technology.

These real-time features can differentiate an eCommerce store from competitors, improve customer engagement, and ultimately drive sales. However, it is essential to carefully analyze the target audience and business objectives to determine which features are most suitable for implementation.