diff --git a/apps/desktop/src/main.ts b/apps/desktop/src/main.ts
index 19c67ec..fed7d5d 100644
--- a/apps/desktop/src/main.ts
+++ b/apps/desktop/src/main.ts
@@ -522,20 +522,32 @@ function renderProvisionForm(profile: MachineProfile) {
 
   contentElement.innerHTML = `
     <form id="provision-form">
-      <label>
-        Código de provisionamento
-        <input type="password" name="provisioningSecret" placeholder="Insira o código fornecido" required autocomplete="one-time-code" />
-      </label>
-      <label>
-        Tenant (opcional)
+      <div class="field">
+        <label class="label">Código de provisionamento</label>
+        <div class="input-group">
+          <input id="provisioningSecret" type="password" name="provisioningSecret" placeholder="Insira o código fornecido" required autocomplete="one-time-code" />
+          <button type="button" id="toggle-secret" class="icon-button" aria-label="Mostrar/ocultar">
+            <svg class="icon-eye" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg">
+              <path d="M12 5C7 5 2.73 8.11 1 12c1.73 3.89 6 7 11 7s9.27-3.11 11-7c-1.73-3.89-6-7-11-7Z" stroke="currentColor" stroke-width="1.8"/>
+              <circle cx="12" cy="12" r="3" stroke="currentColor" stroke-width="1.8"/>
+            </svg>
+          </button>
+        </div>
+        <span class="optional">Segredo fornecido pelo servidor</span>
+      </div>
+
+      <div class="field">
+        <label class="label">Tenant (opcional)</label>
         <span class="optional">Use apenas se houver múltiplos ambientes</span>
         <input type="text" name="tenantId" placeholder="Ex.: tenant-atlas" />
-      </label>
-      <label>
-        Empresa (slug opcional)
+      </div>
+
+      <div class="field">
+        <label class="label">Empresa (slug opcional)</label>
         <span class="optional">Informe para vincular à empresa correta</span>
         <input type="text" name="companySlug" placeholder="Ex.: empresa-exemplo" />
-      </label>
+      </div>
+
       <div class="actions">
         <button type="submit">Registrar máquina</button>
         <button type="button" class="secondary" id="refresh-profile">Atualizar dados</button>
@@ -563,6 +575,19 @@ function renderProvisionForm(profile: MachineProfile) {
       setAlert("Não foi possível atualizar as informações da máquina.", "error")
     }
   })
+
+  // Olhinho: mostrar/ocultar segredo
+  const toggleBtn = document.getElementById("toggle-secret") as HTMLButtonElement | null
+  const secretInput = document.getElementById("provisioningSecret") as HTMLInputElement | null
+  toggleBtn?.addEventListener("click", () => {
+    if (!secretInput) return
+    const isPw = secretInput.type === "password"
+    secretInput.type = isPw ? "text" : "password"
+    // alterna ícone
+    toggleBtn.innerHTML = isPw
+      ? '<svg class="icon-eye-off" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg"><path d="M3 3l18 18" stroke="currentColor" stroke-width="1.8"/><path d="M10.58 10.58A3 3 0 0012 15a3 3 0 001.42-.38M9.9 4.24A10.94 10.94 0 0112 4c5 0 9.27 3.11 11 7a11.65 11.65 0 01-4.31 5.22M6.35 6.35C4 7.76 2.27 9.7 1 12c1.73 3.89 6 7 11 7 1.53 0 2.99-.29 4.31-.82" stroke="currentColor" stroke-width="1.8"/></svg>'
+      : '<svg class="icon-eye" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg"><path d="M12 5C7 5 2.73 8.11 1 12c1.73 3.89 6 7 11 7s9.27-3.11 11-7c-1.73-3.89-6-7-11-7Z" stroke="currentColor" stroke-width="1.8"/><circle cx="12" cy="12" r="3" stroke="currentColor" stroke-width="1.8"/></svg>'
+  })
 }
 
 async function handleRegister(profile: MachineProfile, form: HTMLFormElement) {
diff --git a/apps/desktop/src/styles.css b/apps/desktop/src/styles.css
index 94979f7..322173f 100644
--- a/apps/desktop/src/styles.css
+++ b/apps/desktop/src/styles.css
@@ -71,9 +71,8 @@ form {
 }
 
 label {
-  display: grid;
-  gap: 6px;
-  font-weight: 500;
+  display: block;
+  font-weight: 600;
   color: #0f172a;
 }
 
@@ -83,6 +82,29 @@ label span.optional {
   font-size: 0.85rem;
 }
 
+.field { display: grid; gap: 6px; }
+.label { font-size: 0.9rem; }
+
+.input-group { position: relative; }
+.input-group input { width: 100%; padding-right: 40px; }
+.icon-button {
+  position: absolute;
+  top: 50%;
+  right: 8px;
+  transform: translateY(-50%);
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  width: 28px; height: 28px;
+  border-radius: 6px;
+  border: 1px solid transparent;
+  background: #f1f5f9;
+  color: #334155;
+  cursor: pointer;
+}
+.icon-button:hover { background: #e2e8f0; }
+.icon-eye, .icon-eye-off { width: 18px; height: 18px; }
+
 input,
 select {
   padding: 10px 12px;