Heat oil in a large nonstick skillet over medium-high heat.
Combine ginger, soy sauce, vinegar, sugar, and garlic, stirring with a whisk.
Add bell pepper and onion to pan; stir-fry 2 minutes or until crisp-tender. Add snow peas and shrimp; stir-fry 3 minutes or until shrimp are done. Add soy sauce mixture, and cook 1 minute. Sprinkle with sesame seeds.