Digital biomarkers are objective, quantifiable measurements of physiology or behavior gathered by digital devices (like wearables, smartphones or implants) that indicate health or disease processes. In other words, they are the health data collected by your devices that reflect your biological state. Continuous heart‐rate reading from a smartwatch, patterns of typing speed on your phone, or voice changes during calls can all serve as digital biomarkers.

Designing PCBs for wearables is unforgiving - tight spaces, high-speed signals, RF sensitivity, and strict reliability demands, leave little room for error. In this blog, I break down the 20 biggest wearable PCB design mistakes I’ve made firsthand, from poor grounding and antenna isolation to footprint errors, flex PCB failures, and overlooked DFM/DFA rules.

When it comes to choosing between a smart ring and a smart watch, the best option depends on your lifestyle and priorities. Smartwatches are feature-rich all-rounders - ideal for fitness tracking, notifications, and on-the-go productivity, while smart rings excel in discreet, 24/7 health monitoring with longer battery life and minimalist comfort.

Wearables are shaping the future of health monitoring by combining advanced sensors, data analytics, and AI-driven algorithms to deliver personalised, real-time health insights. From tracking heart rate, sleep patterns, and glucose levels to supporting early disease detection and remote patient monitoring, these devices go beyond fitness tracking to offer medical-grade information.

Modern sensors, AI analytics, and smartphone integration have turned watches, bands, and rings into powerful health monitors. However, most mass-market wearables focus on generic metrics and face challenges in accuracy, privacy, and long-term engagement. Future wearable tech is pivoting toward specialized, screenless designs that emphasize deeper health metrics and seamless integration with care.

In the coming years, our health tracking will move beyond single devices to multi-wearable synergy. Combining complementary wearables (rings, bands, headbands, patches, etc.) provides a holistic, continuous view of wellness that no single gadget can match. By fusing data across devices with AI, this multi-device approach turns raw signals into actionable personalized wellness insights, making tomorrow’s health tracking smarter and more powerful than ever.

India’s healthcare system remains largely reactive, with only 14% of spending on prevention and 38% on hospital care, driving up costs and worsening outcomes. With 60% of deaths linked to non-communicable diseases, early screenings and wellness programs are crucial. To reduce disease burdens and healthcare expenses, India must prioritize preventive healthcare, boost awareness, and invest in early detection.

Building hardware is tough - brutally so. The truth about building hardware in India (and everywhere) is that success requires relentless pragmatism: funding plus early revenue, extreme cost-awareness from day one, a debug-first prototype mindset, rigorous vendor relationships, and the humility to iterate until something that “looks simple” actually works reliably.

The Orbyt v10 smart ring represents our biggest leap in engineering: a complete redesign that made it the thinnest ECG-enabled smart ring in the market. By rebuilding the PCB from scratch, shrinking enclosure thickness, fixing electrode corrosion, and upgrading charging architecture, we solved long-standing comfort, durability, and manufacturability issues.

User testing is often seen as the final checkpoint in electronics development - but in reality, it's where true engineering refinement begins. While simulations, lab tests, and ideal conditions help get a product off the ground, only real-world usage reveals how electronics behave in the hands of actual users. In this blog, we take you behind the scenes of how user trials exposed critical design flaws in comfort, charging, durability, and PCB reliability - and how we systemat