diff --git a/abrechenbarkeit.lua b/abrechenbarkeit.lua
index 0210865..4820094 100755
--- a/abrechenbarkeit.lua
+++ b/abrechenbarkeit.lua
@@ -373,25 +373,27 @@ local function r_transaction_post()
     local pcode = data.pcode
     local pcount = tonumber(data.pcount)
     local comment = data.comment
-	local barcode_name = nil
+	local pname = data.pname
     
-    if pcode ~= nil and pcode ~= "" then
+    if pname ~= nil or (pcode ~= nil and pcode ~= "") then
 		-- check if barcode exists
-		local exists = false
-		for p_name, p_barcode in read_barcodes() do
-			if p_barcode == pcode then
-				exists = true
-				barcode_name = p_name
+		if pname == nil then
+			local exists = false
+			for p_name, p_barcode in read_barcodes() do
+				if p_barcode == pcode then
+					exists = true
+					pname = p_name
+				end
 			end
-		end
-        if not exists then
-            return error_box("{+error.unknown_barcode}")
+	        if not exists then
+	            return error_box("{+error.unknown_barcode}")
+	        end
         end
     
     	-- check if product exists
         local exists = false
         for p_amount, p_user, p_name in read_products() do
-            if barcode_name == p_name then
+            if pname == p_name then
                 pcount = (tonumber(data.pcount) or 1) * (data.negate_pcount ~= nil and -1 or 1)
                 amount = amount or pcount * p_amount
                 user_src = user_src or p_user
@@ -401,7 +403,7 @@ local function r_transaction_post()
             end
         end
         if not exists then
-            return error_box("{+error.unknown_product}"..barcode_name)
+            return error_box("{+error.unknown_product}: "..pname)
         end
     end
 
@@ -467,8 +469,8 @@ local function r_user(username)
                 { time = format_duration(os.time() - last_txn), username = urlencode(username) }))
             print([[</div>]])
         end
-		print([[
-		<ul class="userforms"><li>
+        
+		print([[<ul class="userforms"><li>
         <div class="amount-presets backgroundbox">]])
         for _, type in ipairs({ 1, -1 }) do
             for _, amount in ipairs({ 50, 100, 150, 200, 500, 1000 }) do
@@ -488,6 +490,44 @@ local function r_user(username)
             end
         end
         print("</div></li>")
+        
+        print(format([[<li><div class="backgroundbox shortcuts">
+        	<h3>{+user.shortcuts}</h3>]]))
+        local lastcategory = nil
+        	-- user is category; @ is removed for ZSKs
+            for price, category, name in read_products() do
+             	if lastcategory ~= category then
+             		if lastcategory ~= nil then
+             			print("</ul></div></label>")
+             		end
+					print(format([[<label>
+					<input type="checkbox" hidden />
+					<div>
+					<span class="button amount-ntr">{c}</span>
+					<ul>]], {
+					c = category:gsub("@", ""),
+				}))
+
+				lastcategory = category
+        	end
+
+        	print(format([[<li><form method="POST">
+        		<input type="text" name="user_dst" value="{!username}" hidden />
+        		<input type="number" name="pcount" value="-1" hidden />
+				<input type="text" name="pname" value="{name}" hidden /> 
+				<input class="button amount-ntr" value="{name}
+{+price.amount}" type="submit" />
+			</form></li>]], {
+        		name = name,
+        		username = username,
+        		sign = price >= 0 and "-" or "+",
+		        amount = string.format("%.2f", math.abs(price / 100)),
+		        unit = config.unit or "€",
+        	}))
+		end
+		print("</ul></div></label>")
+
+		print("</div></li>")
 		print(format([[
             <li><form class="transaction box backgroundbox {disable_class}" action="" method="POST">
                 <h3>{+user.form.transaction}</h3>
@@ -516,11 +556,10 @@ local function r_user(username)
 		local users = get_active_users();
 		for _, u in ipairs(users) do
 			if u.name ~= username then
-				print(format("<option value={!name}>{name}</option>", { name = u.name }))
+				print(format([[<option value="{!name}">{name}</option>]], { name = u.name }))
 			end
 		end
-        print(format([[
-                </select>
+        print(format([[</select>
                 <input type="text" name="user_src" value="{!username}" hidden />
                 <label for="amount">{+field.amount}: </label>
                 <input type="number" name="amount" id="amount" />
@@ -538,8 +577,11 @@ local function r_user(username)
                 <label for="pcode">{+field.barcode}: </label>
                 <input type="text" name="pcode" id="pcode" />
                 <input type="submit" value="{+user.form.restock.submit}" class="button amount-pos" />
-            </form></li>
-        ]], { username = username, disable_class = is_special and "disabled" or "" }))
+            </form></li>]],
+            {
+            	username = username,
+            	disable_class = is_special and "disabled" or "",
+            }))
         print("</ul>")
     end)
 end
@@ -743,7 +785,8 @@ local function r_products_post()
     if name == nil or name:match("^" .. matchers.name .. "$") == nil then
         return error_box("{+error.invalid_name}")
     end
-    
+
+    -- delete product
     if data.delete then
         local new_products = io.open("products.new", "w+")
         if new_products == nil then
@@ -798,13 +841,31 @@ local function r_products_post()
         if user == nil or user:match(matchers_global.user) == nil then
             return error_box("{+error.invalid_user}")
         end
-        local products = io.open("products", "a+")
-        if products == nil then
-            return error_box("{+error.open_products}")
+		-- add product
+        local new_products = io.open("products.new", "w+")
+        if new_products == nil then
+            return error_box("{+error.open_new_products}")
         end
-        products:write(string.format("%d,%s,%s\n", price, user, name))
-        products:flush()
-        products:close()
+		local wrote = nil
+		-- prepend to any block in the file containing products of the same user
+		-- the shortcuts feature expects this!
+        for a_price, a_user, a_name in read_products() do
+            if user == a_user and not wrote then
+            	wrote = true
+		        products:write(string.format("%d,%s,%s\n", price, user, name))
+            end
+
+            new_products:write(string.format("%d,%s,%s\n", a_price, a_user, a_name))
+        end
+
+		-- append if not wrote already
+   		if not wrote then
+        	products:write(string.format("%d,%s,%s\n", price, user, name))
+        end
+
+        new_products:flush()
+        new_products:close()
+        os.rename("products.new", "products")
     end
 end
 
diff --git a/locale/de.ini b/locale/de.ini
index ac89608..139d272 100644
--- a/locale/de.ini
+++ b/locale/de.ini
@@ -29,6 +29,7 @@ time.minutes=Minuten
 time.second=Sekunde
 time.seconds=Sekunden
 user.balance=Kontostand
+user.shortcuts=Schnellzugriff
 user.form.buy.submit=Kaufen
 user.form.buy=Produkt kaufen
 user.form.restock.submit=Wiederauffüllen
diff --git a/locale/en.ini b/locale/en.ini
index a2cdb16..29de51a 100644
--- a/locale/en.ini
+++ b/locale/en.ini
@@ -41,6 +41,7 @@ time.minutes=minutes
 time.second=second
 time.seconds=seconds
 user.balance=Current balance
+user.shortcuts=Shortcuts
 user.form.buy.submit=Buy
 user.form.buy=Buy Product
 user.form.restock.submit=Restock
diff --git a/style.css b/style.css
index e1f7a74..bcb9ca8 100644
--- a/style.css
+++ b/style.css
@@ -220,7 +220,7 @@ h1 {
     list-style-type: none;
 }
 
-input.button {
+.button {
     place-content: center;
     padding: 0.8em 0.5em;
     border: none;
@@ -257,7 +257,7 @@ input.amount-neg {
     color: #00e1ff;
 }
 
-input.amount-ntr {
+.amount-ntr {
     background-color: #0e646f;
 }
 
@@ -291,6 +291,53 @@ ul.userforms > li {
     width: 36em;
 }
 
+/* shortcuts */
+.shortcuts > label {
+	display: inline-flex;
+	/* dunno why, but will otherwise clip the headline ¯\_(ツ)_/¯ */
+}
+
+.shortcuts > label > div > span {
+	display: block;
+	margin: .25em;
+	user-select: none;
+}
+
+.shortcuts > label > div > ul {
+	display: none;
+}
+
+.shortcuts > label > input:checked + div > span {
+	border: none;
+	text-decoration: underline;
+	font-weight: bold;
+}
+
+.shortcuts > label > input:checked + div > ul {
+	display: inherit;
+}
+
+.shortcuts input.button {
+	font-size: 1.2rem;
+	margin: .5rem;
+}
+
+.shortcuts ul {
+    content: '';
+    display: table;
+    clear: both;
+    list-style: none;
+    margin-left: 0.5rem;
+    padding: 0;
+}
+
+.shortcuts li {
+	width: fit-content;
+	float: left;
+	padding: 0.1rem;
+}
+
+
 /* create transaction box */
 .box {
     display: grid;
@@ -350,7 +397,6 @@ form.disabled input {
 }
 
 @media print {
-
     nav,
     .container {
         display: none;